An English driver at the Michigan Can Am was Tony Dean, driving a Porsche -Audi 908 # 9.
Tony Dean on the warm up lap in Porsche-Audi # 9
(Jerry Melton photos..)
I can remember that Tony could be very quick.
Towards the end of the 1973 British F 5000 season I went to a race at Snetterton and in a race that included Peter Gethin, Teddy Pilette, Bob Evans etc. at the end of the first lap Tony Dean came around first and was so much faster than the rest of the field as my photo shows.
Snetterton. 1973. Tony Dean easily in the lead.
(Ken Hyndman photo.. )