6 SEP '87
Round 7
Silverstone
Great Britain
2 AUG '87
Round 5
Spa-Francorchamps
Belgium
12 JUL '87
Round 4
Nürburgring
Germany
17 AUG '80
Round 10
Mosport, Ont.
Canada
15 JUN '80
Le Mans
France
Hans Heyer