Engine Donor
I drove the van 2.5 hours back to my house from Charlotte, NC. The engine ran terrifically the whole way, although the top speed of 60MPH was a little slow. I actually got passed by a wide load, that's never happened before... Due to the sidewinds I encountered, I don't think I'd have wanted to go faster anyways. I started with a 1/2 tank of diesel and only burned about 1/8 tank on the 2.5 hour drive at near redline. I wonder how big the tank is???
The engine is very clean and doesn't appear to have much mileage on it. The van was shipped from the factory with a 350 gas motor, and only has 80k miles on it between both motors!!
I'll probbably begin removing the Cummins from the van soon, and will get some motor shots then.
Next, I set about mounting the power steering box to the frame on the drivers side. I made a 1/4" plate to mount the box to and welded it to the frame. Then I used stacks of washers to mount the box ears to the plate. I drilled through the frame and the plate with a 1/2" drill and then bolted it on with the washers in place. With the box in place, I welded the washers together. This may not be the prettiest way to do it, but it will be very strong. I also cut a recess into the front crossmember to recess the steering box into the frame. Here it is with the box mounted up. The steering box is a remanufactured box for a 1968 Chevy Impala. This box is a 4 bolt box with 4.5 turns from lock to lock, and is the most often used saginaw box for power steering conversions. 

I mounted the calipers such that they would be as high as possible and also have the bleeders at the top of the caliper. Next, I re-assembled and painted the rear axle. I prepared each axle by wire wheeling to bare metal, then applied a phosphoric acid etch, then painted on the Zero-rust. We'll see how it holds up. Here's the axle painted and mocked up under the frame with the tires installed. 
