A simple question that one might know.....

Its been a while now since i have done any mods. I have a magnapack catback exhaust, and a CAI right now. Looking for midpipe and long tube headers. Anyways i also want to get 3.73 gears in the car. Do i need anything more then just the pinion and gear..... or is that it? Cause you can find those for like 150 bucks... but i know installation is a killer. But i was just asking, if thats all i need... or i need to do special upgrades? Im lost and thanks!
 
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Many recomend an install kit after 65000 miles, for the bearings to be replaced. But mine were perfection when i did my rear end and my car had 105k miles. All you need is the ring, pinion, gasket sealer for the pumpkin lid, and 3 quarts of synthetic gear oil