I ran...
742 case
All new bearings w/ new Richmond 4.10s
MW steel caps for both bearings
Fresh & tight clutch-type Sure-Grip
Moser axles
Small brace on E-body diff housing

Seemed to be doing fine w/ mid-1.4 60s foot-braking at 3700++ #s (mid 10s).

Even so, there's a Strange S-60 w/ an S-Track diff under the car now for peace of mind.

The 8.75's 3rd member is in somebody's no-traction street car. The old housing is laying on the floor of my garage getting dusty and will probably end up going to the local metal recycler.