Look into a Ford Explorer Sport Trac rear end. That is what I have in my truck. It was right around the same width as the factory D35, had drum brakes so the proportioning valve doesn’t need to be changed, and I was able to keep my stock Jeep driveshaft and didn’t need to modify it.
Showing width:
Joint needed to add to driveshaft, stock MJ driveshaft, sorry about the bad lighting: