Rear end question

Thats the Ring and pinion cost, I was told a bearing set and shims, plus installation added up to about $1000.
I'm trying to keep this simple, and if I went Dana 60, it would be at least new disk brakes and I have very little clearance in the fender wells.

I've seen the videos of how to align the ring and pinion and I have no tools like those. I understand the backlash is .004" and pinion depth is critical as well.

I can drop the rear end and reinstall another that is already built correctly.