Not sure if this is your car, as I think there were two Hoffman Camaros built, but here is a scan of a photo I found on page 123 of the book entitled "Camaro! From Challenger to Champion: The Complete History" by Gary L. Witzenburg. The caption states, "Chevy engineer Dick Hoffman's Camaro built for '73 series." Could this be a typo and they meant to write 1971 or 1972, or did he also run a car in 1973??? Anyway, I thought of this thread when I was looking at this book the other day.