some of this has been posted before but if any new people are interested
Don Yenko was known for selling 427 Camaros and racing Corvettes but he also raced 302 1st gen Camaros
Don had a 67 home built Z/28 which he ran with Jerry Thompson
Don had one of the old Smokey Yunick 68 Camaros he ran some Trans Am races in 1969 and won the Daytona Citrus 250 with it. This car had some sheet metal covers on the head lights that sort of looked like an RS grill
Don ran a red 1969 #5 Camaro in partnership with others and this car can be seen in the Movie "The Racing Scene" 1969 James Garner movie
Don ran a blue and white #9 1969 Camaro in 1970 with a 302 in some races and ran it with a 427 ZL1 engine at Sebring 1970.
It was said to be very fast and ran with the 427 Corvettes but broke
thanks to Jon for some of this info