Thanks for the response. Have been racing this car (Class of '65) in U/SA forever, but since NHRA decided that a 1976 Mustang Cobra with a 302 only had 133 HP, we have magically become rather uncompetitive. The only fit I knew about on the 65 car was Hedman, but they are 1 3/4 inches. The suggestions here are great. I looked at TTI and their current listings indicate fitment for 66-72 or something like that.