(Dr.) Helmut Marko 
917
1970      Le Mans series race     No.TeamChassisFinishCo-driver
12.04.70Osterreich 1000km12Porsche Salzberg    020DNFAhrens

1971      Le Mans series race     No.TeamChassisFinishCo-driver
30.01.71Daytona 24 hours3Martini019DNFLins
09.05.71Spa 1000km23      Martini019DNFvan Lennep
12.06.71Le Mans 24 hours       22      Martini0531     van Lennep
27.06.71Oserreich 1000km      28      Martini       030DNFLarrousse
17.10.71Paris 1000km      5 Gesipa      007DNFWeber