PORSCHE RACING HISTORYAlan Johnson (2) (USA)
1979 : Mid-Ohio 250 Miles - 1st in class
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 |
15 July 1979 - Mid-Ohio 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 55 | Porsche 911 Carrera RSR | 911 560 9121 | GTO | Howard Meister (USA)/Alan Johnson (2) (USA) | 6th | 1st | 9th | 98 laps |