I'm wondering what parts are required for a 4 speed auto trans swap. My brother has a 86se with a 3.4pr swap and currently has a 3 speed auto which is going bad. He's wanting to install a 4 speed auto. I know I'll need a transmission and axles but what else. What year transmission is the easiest/best?
88 Coupe: 2.0L Turbo 4 Cylinder, W2A, T25 Turbo, water/meth injection
84 Indy #64: Restoration Project, Super Duty 4 swap