PORSCHE RACING HISTORYPaul Fassler (USA)
1980
22 March 1980 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 06 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Jim Mullen (USA)/Paul Fassler (USA)/Craig Siebert (USA) | Fassler-Mullen Racing | 45th | 18th | 41st | 108 laps - DNF |
27 April 1980 - Riverside 5 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 06 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Paul Fassler (USA)/Jim Mullen (USA) | Fassler - Mullen Racing (USA) | 42nd | 15th | 37th | 63 laps - Oil Leak |