It’s amazing to me how this thread lives on!
A few things to consider in 2024…first, when this was first written most wheels were 15” or 16” and backspacing rarely exceeded 4.5”. Most wheels and oversized tires today are 17” (or more) and the wheels have 6” of backspacing. If you go with the deeper backspacing your tires will move toward the springs and rub when turning.
What to do? I suggest using wheel spacers to get back what is lost with deeper backspacing (can also fix the 6 to 5 lug issue). I know, we’re all anti wheel spacers…BUT, we’re talking about heavier axles put under a light CJ. I’ve had spacers on my Chief for twenty years and never had a problem and know many others running spacers both on road and off.
I still have drum brakes on the rear waggy 44 under my Scrambler but plan on converting to disc this summer. It sits more than I like, which isn’t good for drum brakes.