PORSCHE RACING HISTORYDennis Aase (USA)
1983
10 July 1983 - Brainerd 500 km - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Bob Akin (USA)/Dennis Aase (USA) | Bob Akin Motor Racing (USA) | 4th | 4th | 5th | 102 laps |
14 August 1983 - Mosport 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Bob Akin (USA)/John O'Steen (USA)/Dennis Aase (USA) | Bob Akin Motor Racing (USA) | 12th | 6th | 5th | 191 laps |