My father and myself are doing a complete ground up build on an YJ. That is a pile-o-parts without a staring vehicle.
As you can imagine there are a number of pieces that are ether hard to get or simply unavailable through normal channels. Such is the case with most any custom build.
One place that has been just super to work with is JTE jeep parts email@example.com
Todd of JTE has been most helpful. Great communications. FAST shipping and fair prices. So if you ever find yourself looking for that OEM jeep part give him a call.
His knowledge is superb, inventory vast and all around good guy.