PORSCHE RACING HISTORYChassis No. 453360
1 May 1983 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 911 Carrera | 453360 | GTO | John Johnson (USA) | John Johnson (USA) | 25th | 16th | 21st | 2 laps - DNF |
24 July 1983 - Sears Point 3 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 911 | 453360 | GTU | John Johnson (USA)/Walt Maas (USA) | John Johnson (USA) | 13th | 4th | 22nd | 95 laps |
5 August 1984 - Sears Point IMSA GT - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 68 | Porsche 911 | 453360 | GTU | John Johnson (USA) | John Johnson (USA) | 14th | 8th | 19th | 29 laps |