Found this article on a 67 Yenko Camaro that ran in AHRA. It had two AFB 4BBL carbs, Doug's headers, traction bars by Jess Tyree, 4:88 gear, and a lift off 4 pin glass hood that looks like a stinger hood without the stinger. Has "Yenko S/S Camaro Dealers" on the door. Driver was Mike Garfinkel from Highland Parl IL. Mike was the 66 AHRA Super Stocker points champ in a Pontiac and had some sort of deal with Dick Harrell in 67. I believe AHRA allowed dealer built cars to run in their Super Stock class if 50 or more were built. NHRA rules were 50 factory built. Yenko did have a two 4BBl option listed for the 67 Yenko Camaro. Cool car. Looks like it was a 327 from the flags on the fender.