74 Mav302 3speed I would like to go with a close ratio 4speed? What parts will Interchange and what do I need to replace besides the trans?
If you already have the 3 speed, a 4 speed is a bolt in deal. All you need is the trans and shifter. I have used both toploaders, and Bourgwarner T10's with no problems. The T10 is a little more compact but either require no mods.