I'd say that there are many BB/SB Mopars in stock eliminator with #'s in the low 10's with 8 3/4 rears. Most R&P are changed every 300 passes or less. You see the weight transfer of those cars and the complete rear takes a pounding. The days of the good(metallurgical) R&P for the 8 3/4 are not so good anymore. India/Italy/China are not the best sources. The 8 3/4 doesn't sell enough to warrant "Good Quality" attention anymore. Had to find good Dana parts too. The 9" is glory kid now and all resources are going that way,