Rear Diff

yeah all that bein said, i knew a guy with a 4700lbs pickup with big block chevy & fogger it would blow out dana 60's

a 2800 lbs car will be easier on rears than a 3885 lbs car... so there are lots of factors

Yes the diff still had a crush sleeve and not the crush sleeve eliminator, could be the reason. I dont know about the history on the diff as well