Shifter appears to be fine. All the shifter detents Line up with the transmission. So hopefully that will work out.
Also ordered a driveshaft. The one I had was too short. Go figure, going from a 4 speed to an 8 the driveshaft needs to be longer. So more research and I found a bill of material list for gm driveshafts. It includes everything from length, u joint size, shaft material, Oem part number, etc. I found one the right length with the correct u joints, plugged the oem number in rockauto and ordered it. $300 direct from rock auto! Here’s a link to that bill of materials page.
https://www.demandaam.com/technical-...l-of-materials
I ordered a new pinion yoke to match the 1410 u joint and I should be able to drive this thing out of the garage. I made an appointment to see if it can be aligned for August 27. Mock up is nearly complete