71 Duster 360 turbo build

Well a month ago I brought my 8 3/4 center section to a very reputable shop to swap the gears from 3.91’s to 3.23’s. Supplied them with ALL the parts needed, and just picked it up today because they hadn’t even started on it. Covid world.

So tomorrow I’m going to attempt it myself. 489 housing with a crush sleeve eliminator kit from Dr. Diff so if anyone has any advice I’m all ears!