ok so just bought a spooled rear end out of a 9 sec car.. i got it from my buddie he swaped car bodies, and never checked to see if there was gear oil in it. well needless to say rear end locked up on him. i looked over the rear high and low to see what was bad and just turns out the pinon bearing.i plan on rebuilding the rear and selling it.. the rear has moser 31 spline axles the spooled rear (duh lol). is this worth the time and possible money thst i will take and spend o do it that