マーチ・エンジニアリング
In 1970 he teamed up with Brian Redman to drive a Porsche 908/3 to victory at the Targa Florio. That same year, Porsche bankrolled Siffert's seat in a works March Engineering F1 since the German company did not wish to lose one of their prize drivers to rival Ferrari. His association with March in F1 was disastrous, so he was pleased to join rival Porsche racer Pedro Rodriguez at BRM the following season.