You can brace it like a tank and it will NOT fix the inherent weakness of the 8.75. Torque pushes the ring gear away from the pinion when the case flexes. You CAN'T fix that. They break caps because all the debris from the shelled teeth gets in there and it pushes the cap off. So you will spend a lot of time and money trying to fix a problem you can't fix and it will eventually break anyway.
Put a 9" inch in it and forget it
if you look at the pic i posted earlier we tried to address that very problem. the extra cap on the cap is designed to fit snuggly against the back of the housing so its harder for the caps to deflect & allow the failure as you described. it seemed to have held out ok as since i did this trick the 8 3/4 lived without a failure. i dont use a brake on this car anymore so i'm sure my upgrade with live as long as i'm abusing this car.
my other racecar has a 9". too easy & you trip over parts everywhere.
