At the start of the 1971 season he purchased a March 711, which he planned to take back to the United States and race in the U.S. Formula 5000 series. Before he did so, he took part in the Monaco Grand Prix, Dutch Grand Prix, United States Grand Prix, and Canadian Grand Prix in a privately funded March. He returned to the U.S. and Canadian races in 1972. After that, he raced GT cars.