1978 | Abandono | 94 | Porsche 935/77 A Turbo | Don Whittington/Bill Whittington/Franz Konrad |
1979 | 1º | 41 | Porsche 935 K3 | Klaus Ludwig/Don Whittington/Bill Whittington |
1980 | Abandono | 85 | Porsche 935 K3 "Warthog II" | Don Whittington/Dale Whittington/Hurley Haywood |
1981 | Abandono | 59 | Porsche 935 K3 | Bill Whittington/Don Whittington/Ted Field |