Geoff, the rear end came out of a building called Currie Enterprises, you may have heard of them, they're from Anaheim.

I was thinking of hanging the leafs off the side but I've seen plenty of Rangers with bent mounts and it's a lot cheaper to buy pre made hangers and shackles than it is to make custom ones. I went to Ocotillo on Saturday and found the shackle bolts hit my fuel cell tray and rubs on the frame rails. (If anyone knows the best place to buy Delrin plate, please IM me.) Besides that, we cycled 18" in the back and the rear end is 76.5" tire to tire. Front is 76" on the nose.
As for the lowering blocks, the Currie extreme housing with their rear truss can only angle back so far without hitting the spring at full droop. When my fab guy put the spring pads on we found the pinion angle was way off, about 12 degrees too far down. This happened also in part of the Deaver F55's, which are supposedly made for a truck with a fuel cell, cage, and spare. They were way to arced for my truck and the thing sat 2.5" too high. The blocks are temporary for now until I get the springs de-arched and I get my spring pads moved.
Good guess on the year of my truck, you were only a year off.