You didn't ask and probably don't want to hear it, but.....

Why keep pushing your luck with that poor 8-3/4?

You know you are going to kill the thing. Sooner rather than later and probably with catastrophic results.
Sell it now while it is still in one piece and worth something.

A basic, cut down Dana with a spool isn't that expensive if you reuse your brakes.

Sutton Engineering is a good source reasonably close to you.
- Complete Dana 60 with a Moser spool and 35-spline axles = $1400.00