bought a 1987 monte carlo ss parts car with the 3.73 posi rearend set up and was wondering if these gm 7.5 posi units can be rebuilt? with all new clutches and everything? I'm trying to decided what set up I should run with. (either the stock posi, or go to true-trac carrier) the reason I want to rebuild it is because there is a LOT of clutch material in the oil, and there seems to be a small crack in one of the clutch plates, or some kind of crack on the inside of the unit, not really sure what the part is lol. not very good with rear-ends and what they need when it comes to rebuilding them if you even can. the main reason I want to rebuild this one is because money is tight! and when the time comes I want to put a hole different set up in.