PORSCHE RACING HISTORYPorsche 935 - Chassis No. 930 890 0018
30 April 1978 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 59 | Porsche 935/77A | 930 890 0018 | GTX | Peter Gregg (USA) | Brumos Porsche (USA) | 3rd | 3rd | 3rd | 52 laps |
7 May 1978 - Hallett 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 59 | Porsche 935/77A | 930 890 0018 | GTX | Peter Gregg (USA) | Brumos Porsche (USA) | 13th | 7th | 1st | 43 laps - DNF |
29 May 1978 - Lime Rock 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 59 | Porsche 935/77A | 930 890 0018 | GTX | Peter Gregg (USA) | Brumos Porsche (USA) | 1st | 1st | 1st | 65 laps |
18 June 1978 - Brainerd 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 59 | Porsche 935/77A | 930 890 0018 | GTO | Peter Gregg (USA) | Brumos Porsche (USA) | 1st | 1st | 1st | 33 laps |
4 July 1978 - Daytona 250 Miles Paul Revere - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 59 | Porsche 935/77A | 930 890 0018 | GTX | Peter Gregg (USA) | Brumos Porsche (USA) | 1st | 1st | 1st | 65 laps |
30 July 1978 - Sears Point 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 59 | Porsche 935/77A | 930 890 0018 | GTX | Peter Gregg (USA) | Brumos Porsche (USA) | 26th | 14th | 28th | 3 laps - DNF |
6 August 1978 - Portland 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 59 | Porsche 935/77A | 930 890 0018 | GTX | Peter Gregg (USA) | Brumos Porsche (USA) | 1st | 1st | 1st | 51 laps |
27 August 1978 - Mid Ohio 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 59 | Porsche 935/77A | 930 890 0018 | GTX | Peter Gregg (USA) | Brumos Porsche (USA) | 35th | 13th | 1st | 53 laps - DNF |
4 September 1978 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 59 | Porsche 935/77A | 930 890 0018 | GTX | Peter Gregg (USA) | Brumos Porsche (USA) | 1st | 1st | 3rd | 40 laps |
26 November 1978 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 59 | Porsche 935/77A | 930 890 0018 | GTX | Peter Gregg (USA) | Brumos Porsche-Audi (USA) | 1st | 1st | 1st | 65 laps |
2 September 1979 - Road America 500 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 86 | Porsche 935/77A | 930 890 0018 | GTX | Peter Gregg (USA)/Hurley Haywood (USA)/Bruce Leven (USA) | Bayside Disposal Racing (USA) | 32nd | 9th | 1st | 68 laps - DNF |
23 September 1979 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 86 | Porsche 935/77A | 930 890 0018 | GTX | Bruce Leven (USA) | Bayside Disposal Racing (USA) | 10th | 10th | 14th | 38 laps |
22 March 1980 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 86 | Porsche 935/77A | 930 890 0018 | GTX | Peter Gregg (USA)/Hurley Haywood (USA)/Bruce Leven (USA) | Bayside Disposal Racing (USA) | 10th | 8th | 2nd | 220 laps |
13 April 1980 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 86 | Porsche 935/77A | 930 890 0018 | GTX | Hurley Haywood (USA) | Hurley Haywood (USA) | 2nd | 2nd | 5th | 19 laps |
27 April 1980 - Riverside 5 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 86 | Porsche 935/77A | 930 890 0018 | GTX | Bruce Leven (USA)/Hurley Haywood (USA) | Bayside Disposal (USA) | 3rd | 3rd | 6th | 161 laps |
3 May 1981 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 85 | Porsche 935 | 930 890 0018 | GTX | Bruce Leven (USA) | Bayside Disposal Racing (USA) | 12th | 12th | 20th | 49 laps |