i know you have heard this but your best bet is to just sell the V6 and buy a 5.0 GT it would be cheaper. i dont believe the tranny would even fit on the GT motor and you would still have to change out your rear end. you could probably sell you V6 for 2-3 thousand and pick up a 5.0 for about 3-5 thousand maybe even less. but i do know that those years GT used a T5 transmission.