$476 to assemble an 8 3/4 diff

Sirsmiley9 said
..............any advice on this

Check for a Mopar Club in your area. Mabey someone will offer to help you learn and assemble it if you ask.

If it helps, an alternative for pinion depth (provided a depth is etched on the new pinion head)........
Click here forPinion Setting Tool Diagram (ratechmfg.com)