Mine has been a work in progress, I had a set of S.T.D. stage 4 oval port heads made for it set up @ 10.5 with S&S oval port manifold 48 mikuni with race back, wood 9f cam. superzilla pipe. makes 150 ft. lbs and 139 h.p. going to bump up compression to 11.1 and go with a S&S 640 cam.