Thanks Steve for the interesting inputs.
Another McLaren M8F at Sonoma was the Commander Motor Homes 1972 # 98 driven by Emmett Murphy.
This site describes what a busy team this was in the early 70s and good luck on following the life of chassis # 72-09 which was the blue M8 ? I saw leaving Trojan's in Oct 1972.
http://www.britishracecar.com/ScottH...cLaren-M8F.htm
Ken H photos.