There were at least two ex Smokey Yunick 68 Camaros or built from 67-68
both were raced in 1969 racing season both in the same race at least once
Don had one and the other was run by another name driver
Don raced a red ZL1 powered 69 Camaro  with Bob Grossman with Best Photo sponsor at Sebring with the ZL1 but also ran in other races with a 302 
Don Y and Grossman  ran a white/blue hood  69 Camaro with Marlbank sponsor in 1970 Sebring with a ZL1 
not sure if it was the same car 
it was a very clean looking race car in 1970 Sebring 
the red one was pretty beat up looking in some photos so not sure if they rebodied it or  built a new car 
Don built cars from wrecks, insurance recovery cars, used street cars , used racecars, and some were new such as some of the Corvettes 
http://www.sportscardigest.com/1970-...ace-profile/3/