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What kinda power gains should i expect to gain with a upgraded TB and plu. iam gussing the price would be = to that of new 3.90 gears. Of those two mods wich will be the better to do 1st?
3.90 gear is nice....if your car is low mileage all you need is a pinion nut,seal,crush sleeve,2 qt of syth oil,1- 4oz bottle of friction modiflier, tube a blue/red rv to seal the rear cover, shims