PORSCHE RACING HISTORYDennis Aase (USA)
1979
17 March 1979 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 62 | Porsche 914/6 | 914 043 0593 | GTU | Bill Koll (USA)/Jim Cook (USA)/Dennis Aase (USA) | Koll Motor Sports (USA) | 22nd | 6th | 20th | 182 laps |
22 April 1979 - Riverside 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 64 | Porsche 911 S | GTU | Dennis Aase (USA)/Alan Johnson (2) (USA) | Dennis Aase (USA) | 30th | 12th | 25th | 127 laps - DNF |
17 June 1979 - Brainerd 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 64 | Porsche 911 S | GTU | Dennis Aase (USA) | 37th | 5th | 30th | 5 laps - DNF |