Ragna

K i have a 2k trans am manual 6 speed, looking to make maybe 400-500 depending if i get the job i want/car i really want, my current rear dif lets me move both my rear tires back and forth a ways so i gotta buy either a rebuild or a kit, i work at advanced auto right now so i was woundering if buying this kit http://shop.advanceautoparts.com/p/m...al+bearing+kit would be ok? I know what im doing and have the tools needed just need to know if thats ok or if i should just pay someone to rebuild it and what not?