Don't listen to these guys....The weakest part of an 8.75 rear is the stupid adjusters which is a bolt in the center of the cap.
The billet caps from MW will make your 8.75 a much better piece and it's more the Enough strength for 90% of the mopars out there.
Not sure exactly what "bolt" you're talking about? The adjusters, which are threaded discs on either side of the carrier don't change a bit moving to steel maincaps, and they certainly are not the weak link in an 8-3/4. The steel maincap (really needed on the driver side only) certainly do make the 8-3/4 a better piece, but still not applicable to a 500-cube, 4-speed, B-Body (IMO).
