I ended up buying a selection of parts from A&A. I got one of the billet steel drums, a 5 pinion steel front planet setup, an aluminum park gear with a governor delete, a lightweight sun shell and an ultimate sprag. I have enough parts on hand to build a second trans so I've decided I'm just going to put all the good parts in a '78 truck case that I had sitting on the shelf and then just swap transmissions. That will give me a spare for the shelf in case I need it down the road. After doing some thread repair I've decided that I'm going to switch to studs rather than bolts for the assembly. I designed a bolt on plug for the speedo but then decided to just use the old 1 49/64 plug trick instead.