I am sure my 4r70w is not the one that came in my car. I know my uncle changed it out for my dad at some point in time. Now my uncle had it in his fox mustang 2v motor swap and ended up switching to a tko500 instead of the auto. How can I ID what year and what car my tranny came out of. I want to do a jmod very soon and i see we have 2 people here who can sell me the stuff I need (dirtydog and RobertP) I would like to know what I have so I order what i need correctly so i can do my jmod right the first time.