PORSCHE RACING HISTORYBill Hanel (USA)
1978 : Trans-Am Portland - 3rd overall
11 June 1978 - Trans-Am Portland - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 47 | Porsche 911 Carrera RSR | 911 460 0059 | TA-II | Bill Hanel (USA) | Hanel Racing | 3rd | 3rd | 12th | 48 laps |
30 July 1978 - Sears Point 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 41 | Porsche 911 Carrera RSR | 911 460 0059 | GTO | Bill Hanel (USA) | 20th | 10th | 14th | 20 laps - DNF |