OK, could someone who has put a T5 behind a D4 block 351w, in a 68 stang or cougar weigh in, what pieces are needed, what has to be fabbed, etc, and why should i put a t5 in a 68 cougar when i have a fresh toploader ready to go? A couple of guys think i'm stupid to use a four speed when t5's are "cheap", I have a really tall nine already, and the pedal set, give a bell and clutch and i ready.