Best Bang-For-Your-Buck Tranny Thread

[Si Speed 317]

^that!! To get the Ep3 trans you need to modify 3 or 4 things on the case. Things just don't bolt down the same, the best thing to do is switch the gears. And if you want one hell of a highway MPG queen you can swap in a 6th gear.

to switch the gears into your stock case, you need to get at the minimum a new countershaft bearing, part # 91003-PPT-004 for the 4.3 final drive. Also a good idea to change the transmission baffle as well.

Can you elaborate, go into as much detail as possible?