8 1/4 rearend

I just bought a 3:73 ring and pinion 58.00 and a posi in the carrier with bearing 80.00 on ebay. I am doing the same switch as you. i pulled and 8.25 out of a 74 dart, springs and all in one piece and am going to have it professionally set up as I know nothing of setting a ring and pinion. It will go in my 73 duster. Walt :nike: