PORSCHE RACING HISTORYDon Kravig (USA)
1979
22 April 1979 - Riverside 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 56 | Porsche 911 Carrera | 911 210 0224 | GTO | Rick Borlase (USA)/Don Kravig (USA) | Rick Borlase | 24th | 6th | 35th | 158 laps |
29 April 1979 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 56 | Porsche 911 Carrera | 911 210 0224 | GTO | Don Kravig (USA) | Rick Borlase | 14th | 8th | 26th | 47 laps |
29 July 1979 - Sears Point 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 56 | Porsche 911 | 911 210 0224 | GTO | Don Kravig (USA) | Rick Borlase | 29th | 13th | 29th | 7 laps - DNF |