Mine were on Don's car until he went to the 14 degree set up. I got mine from todd. Mine are 1 7/8 stepped to 2" stepped to 2 1/8 into a 4" collector. I have to get the manual rack and the steering shaft to fit them in my bay. In the process now getting the rack and shaft. Chevy stangs are the way to go and are cool too. Built Ford Tough With Chevy Stuff.