Ryan and I spent a few more hours on Kevin's XJ yesterday. As of last night, the rear axle is complete. ARB plumbing done, rear locker operates as it should. Gear oil filled. Brake line re-flared and attached, could use one more mount up on the truss somewhere, just since it's a long line. Brakes bled, and took it for a test-drive around the parking lot.
Both bump stop mounts welded in, and one bump installed. (other side was too hot to paint, so it will wait)
The brakes work OK, but do feel strange. I don't know if it's due to air still remaining in the lines, or simply the big 1-ton brakes and a stock XJ master cylinder. The brakes could also use some attention--the rear pads are really thin at least.
At this point, I think we're a driveline away from this thing being offroad-able.