T56 is not a tranny for drag racing. U want a tranny with a big first gear ratio. Scott if I were u I would get the TKO. It has a bigger input shaft and also I think tailshaft. They take a beating. First gear ratio of the TKO is 3.27 and with a 5th gear of .68 which isn't bad for cruising. With the TKO u have to change your clutch disk. -Mark