There was a wrecking yard in PHX, AZ called All Models 4x4. They had some parts on the rack that they had pulled for sale, but you could also wander the yard and search for stuff. This was how you discovered the real treasures. I found a tilt steering column out of an S-10 blazer that was used in my CJ-5 as well as a 401 AMC, T-18 transmission, and D44. I really enjoyed going to that place and spending a few hours just wandering around and looking for cool parts. Unfortunately they are closed down as most of those places are. Liability, theft, and the EPA have all had a hand in ruining a great pastime.