PORSCHE RACING HISTORYChassis No. 911 560 9114
1 February 1976 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 61 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Jim Busby (USA)/Hurley Haywood (USA) | Brumos Porsche (USA) | 3rd | 3rd | 28th | 530 laps |
20 March 1976 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 61 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Jim Busby (USA)/Carl Shafer (USA) | Brumos Porsche-Audi (USA) | 8th | 8th | 6th | 210 laps |
2 May 1976 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 61 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Jim Busby (USA) | Jim Busby (USA) | 5th | 5th | 6th | 51 laps |
3 October 1976 - Laguna Seca 100 Miles II - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 61 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Jim Busby (USA) | Busby Racing (USA) | 1st | 1st | 8th | 53 laps |
19 March 1977 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Charles Mendez (USA)/Dave Cowart (USA) | Morrison's Inc. | 10th | 8th | 17th | 197 laps |
17 April 1977 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Charles Mendez (USA) | Morrison's Inc. | 10th | 10th | 12th | 38 laps |
15 May 1977 - Mid-America 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's Inc. | 7th | 7th | 17th | 34 laps |
5 February 1978 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA)/Charles Mendez (USA)/Joe Castellano (I) | Morrison's Inc. | 36th | 10th | 61st | 459 laps - DNF |
18 March 1978 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA)/Nick Craw (USA)/Joe Castellano (I) | Morrison's Inc. | 28th | 8th | 23rd | 165 laps - Suspension |
16 April 1978 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's Inc. | 13th | 4th | 27th | 36 laps |
30 April 1978 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's Inc. | 12th | 3rd | 17th | 48 laps |
7 May 1978 - Hallett 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's Inc. | 9th | 5th | 10th | 50 laps |
29 May 1978 - Lime Rock 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's Inc. | 10th | 2nd | 15th | 61 laps |
18 June 1978 - Brainerd 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's Inc. | 8th | 1st | 10th | 31 laps |
4 July 1978 - Daytona 250 Miles Paul Revere - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA)/Charles Mendez (USA) | Morrison's Inc. | 40th | 14th | 24th | 36 laps - DNF |
30 July 1978 - Sears Point 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's Inc. | 16th | 8th | 8th | 26 laps |
6 August 1978 - Portland 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's Inc. | 8th | 1st | 14th | 48 laps |
27 August 1978 - Mid Ohio 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA)/Mauricio DeNarváez (COL) | Morrison's Inc. | 7th | 1st | 14th | 98 laps |
4 September 1978 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's Inc. | 10th | 3rd | 19th | 37 laps |
26 November 1978 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA)/Howard Meister (USA) | Morrison's Inc. | 14th | 6th | 30th | 60 laps |
4 February 1979 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA)/David McClain (USA)/Kenper Miller (USA) | Budweiser Racing | 60th | 23rd | 22nd | 35 laps - DNF |
17 March 1979 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA)/Kenper Miller (USA)/David McClain (USA) | Morrison's | 14th | 6th | 22nd | 205 laps |
8 April 1979 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's Inc. | 12th | 5th | 15th | 37 laps |
22 April 1979 - Riverside 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA)/Kenper Miller (USA) | Morrison's Inc. | 7th | 1st | 24th | 181 laps |
29 April 1979 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's Inc. | 11th | 5th | 17th | 48 laps |
13 May 1979 - Hallett 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's Inc. | 9th | 2nd | 12th | 52 laps |
28 May 1979 - Lime Rock 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's Inc. | 7th | 2nd | 12th | 61 laps |
4 July 1979 - Daytona Paul Revere 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's Inc. | 18th | 7th | 19th | 55 laps |
15 July 1979 - Mid-Ohio 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA)/Kenper Miller (USA) | Morrison's Inc. | 39th | 18th | 15th | 20 laps - DNF |
29 July 1979 - Sears Point 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's | 10th | 4th | 40th | 38 laps |
5 August 1979 - Portland 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's | 20th | 10th | 21st | 32 laps |
22 March 1980 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 06 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Jim Mullen (USA)/Paul Fassler (USA)/Craig Siebert (USA) | Fassler-Mullen Racing | 45th | 18th | 41st | 108 laps - DNF |
27 April 1980 - Riverside 5 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 06 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Paul Fassler (USA)/Jim Mullen (USA) | Fassler - Mullen Racing (USA) | 42nd | 15th | 37th | 63 laps - Oil Leak |