Good luck, you might be able to find a listing that would help. I seem to remember reading on one of these some of the distinguishing parts are. I know the Synchros are different, the gear ratios are different, and the late models 94-95 have synchro on reverse, but parts don't interchange on that. Some parts do interchange between GM and Ford T5s so you can mix and change ratios but must know what you are doing. 1Bad is right, no tag, anybody's guess from 84 to 93 or newer.