Kevin, Are the 25 Yenko/Harrell vins all late 1967 Yenko Camaros? What is the earliest date on a receipt? Just wondering when Dick began working on the Yenkos. Did a search on the name Sanders. There was a Clare Sanders who drove a 1969 Funny car called the Super Camaro. attached photo. Maybe the same Sanders?
Karnut, NHRA required a minimum of 50 factory built cars. So 1967 and 1968 427cu in SuperCars were not legal in NHRA Super Stock but the 1969 COPO cars were legal.
AHRA used different rules. The 1967 427 Yenko and Nickey ads stated that the cars were "approved for stock class in AHRA ."
Stefano, Don't know of any support groups but I hear that if you duct tape an old SuperCar emblem around your arm it works like the "Patch" does to help smokers kick the habit.