PORSCHE RACING HISTORYDennis Aase (USA)
1981 : Sebring 12 Hours - 1st in class : Laguna Seca 100 Miles - 3rd in class
21 March 1981 - Sebring 12 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 58 | Porsche 911 Carrera RSR | 911 560 9121 | GTO | Chuck Kendall (USA)/Pete Smith (USA)/Dennis Aase (USA) | Charles Kendall (USA) | 5th | 1st | 19th | 218 laps |
3 May 1981 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 64 | Porsche 911 Carrera RSR | GTO | Dennis Aase (USA) | Alan Johnson Racing (USA) | 15th | 3rd | 17th | 49 laps |