Backbraces and billet caps for an 8.75 are "feel good" parts. May make you feel better, but do nothing to keep it from shredding the ring and pinion.
Except the end result of a failed cap is, a "shredded ring and pinion". The gear fails first, resulting in the broken cap. The pinion deflects.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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