I thought that might be your McLaren, Chad, but I wasn't quite sure. I'll look to see if I have any more pics of it.
Below is the '69 Camaro of Carlos Iribe, also seen at the same Ontario event as the Bud Turner car above. It too ran at the '70 Riverside
Trans-Am a couple of weeks later. I'll have to check to be sure but I think Carlos' car was green. (Jon Mello Collection)