PORSCHE RACING HISTORYJohn Hulen (USA)
1984
24 March 1984 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 64 | Porsche 911 Carrera RSR | GTO | Ron Coupland (USA)/John Hulen (USA)/Dan Hartill (USA) | John Hulen (USA) | 69th | 23rd | 54th | 25 laps - Wheel |
26 August 1984 - Road America 500 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 64 | Porsche 911 Carrera RSR | GTO | John Hulen (USA)/Ron Coupland (USA) | John F. Hulen (USA) | 37th | 8th | 46th | 69 laps |