PORSCHE RACING HISTORYChassis No. 911 030 0568
22 March 1980 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 87 | Porsche 911 | 911 030 0568 | GTU | Klaus Bitterauf (USA)/James Moxley (USA)/Vicki Smith (USA) | Der Klaus Haus | 24th | 7th | 74th | 185 laps |
21 March 1981 - Sebring 12 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 88 | Porsche 911 | 911 030 0568 | GTU | Klaus Bitterauf (USA)/James Moxley (USA)/Jim Leo (USA) | Klaus Bitterauf | 35th | 12th | 63rd | 150 laps |
31 January 1982 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 78 | Porsche 911 | 911 030 0568 | GTU | Scott Flanders (USA)/Klaus Bitterauf (USA)/Vicki Smith (USA) | Der Klaus Haus | 25th | 7th | 50th | 511 laps |
20 March 1982 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 78 | Porsche 911 | 911 030 0568 | GTU | Vicki Smith (USA)/Klaus Bitterauf (USA)/Scott Flanders (USA) | Der Klaus Haus | 22nd | 6th | 46th | 183 laps |
16 May 1982 - Charlotte 500 km - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 78 | Porsche 911 | 911 030 0568 | GTU | Klaus Bitterauf (USA)/Vicki Smith (USA) | Der Klaus Haus | 17th | 7th | 38th | 112 laps |
3 July 1982 - Daytona 250 Miles Revere - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 78 | Porsche 911 | 911 030 0568 | GTU | Klaus Bitterauf (USA)/Scott Flanders (USA) | Der Klaus Haus | 23rd | 11th | 36th | 39 laps - DNF |
5 September 1982 - Mid Ohio 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 78 | Porsche 911 | 911 030 0568 | GTU | Klaus Bitterauf (USA)/Vicki Smith (USA) | Der Klaus Haus | 23rd | 8th | 39th | 182 laps |
12 September 1982 - Road Atlanta 500 km - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 78 | Porsche 911 | 911 030 0568 | GTU | Klaus Bitterauf (USA)/Vicki Smith (USA) | Der Klaus Haus | 33rd | 13th | 45th | 66 laps - DNF |
28 November 1982 - Daytona Finale 3 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 78 | Porsche 911 | 911 030 0568 | GTU | Vicki Smith (USA)/Klaus Bitterauf (USA) | Der Klaus Haus | 49th | 13th | 69th | 44 laps - DNF |
6 February 1983 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 78 | Porsche 911 | 911 030 0568 | GTU | Klaus Bitterauf (USA)/Vicki Smith (USA)/Scott Flanders (USA) | Der Klaus Haus | 35th | 11th | 75th | 299 laps - Engine |
19 March 1983 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 78 | Porsche 911 | 911 030 0568 | GTU | Klaus Bitterauf (USA)/Vicki Smith (USA)/Scott Flanders (USA) | Der Klaus Haus | 68th | 23rd | 64th | 59 laps - Gearbox |
10 April 1983 - Road Atlanta 500 km - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 78 | Porsche 911 | 911 030 0568 | GTU | Klaus Bitterauf (USA)/Vicki Smith (USA) | Der Klaus Haus | 36th | 10th | 57th | 87 laps |
24 March 1984 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 78 | Porsche 911 | 911 030 0568 | GTU | Klaus Bitterauf (USA)/Vicki Smith (USA)/Arvid Albanese (USA) | Der Klaus Haus | 65th | 22nd | 78th | 37 laps - DNF |
18 March 1989 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 45 | Porsche 911 | 911 030 0568 | GTU | Charles Slater (USA)/Kenneth Brady (USA)/Norm Dupont (USA) | Charles Slater (USA) | 46th | 15th | 53rd | 93 laps - Engine |