Are there any ways to check out the condition of a T2R or an Auburn limited slip posi? I have one T2R in the car and one in a box that came with the black car as well as an Auburn that has "worn out" written on the box. Also in the box is a return program with Auburn but that it's past the four year window of course so apparently it is re-buildable. Then I have an Eaton in another diff and one more I need to identify.

I'm looking at buying another used aftermarket T2R if the spare I have is bad? Then I'll be selling several others. I recall Craig taking a T2R apart and putting it back together but didn't know if he did something to actually rebuild it or was just playing rubik's cube in the garage?