Martin, you are right that Jim Hall won in Mosport with 2A-002, I was looking at the result of the next race in Kent where he won with 2C-001.
In my source beside the warm-up lap photo it states : John Cannon / Genie-Chevrolet, will try to find other source. But I found another picture with him in a "Genie-Chevrolet", before he switched to a McLaren.
From what I can make up from the warm-up photo I have, the order must be McLaren (4), Amon (2), Hayes (97), Grant (8), Motschenbacher (11), Cannon (62), .. the rest of the numbers are hard to read. Pitty it didn't count for the Can-Am title, otherwise I had the complete startgrid.
Haven't find a photo of the car behind the Corvette, looks like a Lola, but don't know.
DAMAMAHO.
www.asag.sk/danny.htm