PORSCHE RACING HISTORY935 K4
1983
27 February 1983 - Miami GP - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 2 | Porsche 935 K4 | K4-01 | GTP | John Fitzpatrick (GB) | John Fitzpatrick Racing (GB) | 4th | 4th | 2nd | 27 laps |
24 April 1983 - Riverside 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 2 | Porsche 935 K4 | K4-01 | GTP | John Fitzpatrick (GB)/David Hobbs (GB)/Derek Bell (GB) | John Fitzpatrick (GB) | 1st | 1st | 4th | 196 laps |