For the original poster: I hate to say it, but I know multiple guys who have slipped there local smog inspector who is also a hot rod guy $50 and got a smog certificate. Not a legal way of doing it, but gets the job done. Those people that sit on the C.A.R.B. have been huffing nitrous.
DjD is right, any cr pre-73 is exempt from smog requirements. You can run whatever you want, and emissions are not even questioned. It's great for us pre-73 guys, but sucks for the late model guys.
67 Pro-touring Camaro-327, 9:1, Comp XE268 Cam, Perf. RPM Intake. 750 Holley, Sportsman II Heads, Ceramic coated headers, 700R4 trans, 17" Amer. Racing TT2's, 12" disc brakes, custom stereo, black with white stripes, cowl ind. hood.