I was trying to remember whose the Camaro was. Yes, apparently entries were slow forthcoming and the organisers decided to allow OSCA cars subject to the road/radial tire requirement. We did win, but it was an introduction to motorsport politics at best! Apparently nobody had told Ron Silvester ( Event Sponsor) that OSCA cars were allowed & he was a bit unhappy, ..... however was good fun and they wouldn't allow us a second bite at the cherry a few weeks later at levels, so we shovelled the whole kit into a road going Capri Shell... should have quit while we were ahead... we were knackered from lack of sleep prior to event, the Capri handled like a piece of crap unsorted & Derek finally put it out of its misery by giving one of the trackside earthmover tyres a nudge.
I reckon hero of the event was TC who did it solo in his XY non PS Falcon GT. Had blisters to prove it!