PORSCHE RACING HISTORYVan McDonald (USA)
1983
19 March 1983 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 68 | Porsche 911 | GTU | Jack Rynerson (USA)/Van McDonald (USA)/Chris Wilder (USA) | Jack Rynerson | 27th | 10th | 49th | 183 laps |
1 May 1983 - Trans-Am Moroso - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 70 | Porsche 911 SC | Van McDonald (USA) | Van McDonald | 14th | 30th | 42 laps |