anyone have a pic. of the port opening of these headers? are they as restrictive as all the rest of the Mav./Comet headers?
Can't say what the Thorley headers look like, but the Hooker Competition 6901's have a larger exhaust port flange that will accommodate most of the larger aftermarket exhaust ports with a bit of grinding. A lot of the street headers will choke down of good flowing exhaust port. I had two sets for my old Mustang II, both Hedman and Blackjack, that had real small exhaust port flanges that would choke my AFR 165's.
