67 GMC, 283 V8, Holley "Street Dominator" port-matched intake, Hooker "Super Comp" headers, high-comp pistons, cam, Pete Jackson "noisy" gear drive, triple valve springs... sorry I don't have a before and after comparison; this is before. 8,800 rpm redline. TH350, shift kit. Ran a 12.50 sec 1/4 mi. back in the day with a hot-ish 327... while pulling the front wheels 18" off the ground. =D