I just did the keisler conversion in my 70 challenger. I replaced the auto tunnel with the correct 4 speed one. After this was complete I sitll had clearance issues. The kit came with an extra piece of flat sheet metal and a template to use it if you still had problems, and of course I did. Also,I've heard the ebody's have greater clearance issues. So after all this was done it was a fairly big mod. Oh and the pedals are the easiest part of the conversion! Just lube up the bolt with some wd-40 a few days before you do the pedals.