My “buddy” rebuilt it

Buying stuff sight unseen has always been a gamble.  Owner bought this on the net and brought me it to for installation.  The seller informed him it was rebuilt by his “buddy”.  Upon initial inspection, everything looked in order and function properly.  Disassembly revealed something completely different.  While taking apart the differential, all the bolts were loose.  Bits and pieces of the LSD were falling out as I continued the disassembly.  My guess is that the LSD was subjected to a lot of horsepower.  Then the “buddy” took it apart for inspection, found out it’s been grenaded, put it back together and sold it off to an unsuspecting buyer.  That’s why sometimes it’s better to pay a little extra and buy local so that parts can be physically inspected.