The 2004R in the Buick GN's & T-Types hold up pretty well in a stock 3600-3750 lb car & stock they are close to 300 HP, those guys usually do not have much problems w/the trannys until they are running in the 11 second range in the 1/4 mile. Then they need some tweaking/modding.
Guys have built those R4's to run in the 9's w/there GN's & T-Types w/transbrakes also.
JimRJ,
once you have done this swap, you will ask yourself, why didn't I do this trans swap a long time ago?
It will make a big improvment on your car acceleration.
MBHD
