Thanks Barnbird, I think you miss understood me about the drag I felt. The drag is in the transmission in neutral i believe. Since removing the driveshaft the rear end spins super easy just grabbing the yoke.
Second thank you for the tips on the pinion seal replacement I will be sure to use the suggested rtv on the metal part of the seal. Any particular color RTV?
What weight diff fluid is recommended? 80-90? what type of limited slip additive? Is it 3 quarts to fill it? plus the additive?