I think I found some axles to swap in my CJ. Found a passenger drop front from a Wagoneer and rear from a Grand Waggy. Both are D44s. I believe the front should be a NT (haven't been able to go look at it yet). Will they be close to the same width to use together?
I looked at the chart under the sticky, but some of the measurements were all over the place. Oh and I don't want to cut them down b/c I want a wider stance for my NT CJ.
Not sure about the front. I just know it came out of a Wagoneer with Q-trac. The guy was going to use it under his CJ5, but he went CJ WT instead. Saw the rear at a junkyard yesterday under a Grand Waggy, but didn't have time to check it out.
FSJ NT axles are (IMO) the perfect choice for a medium-duty CJ. The front is what you want - it probably just doesn't have lockouts on it. They are easily swapped in. You are correct that the 86-up Grand Wagoneer D44 is the axle you want to match with the front. It is the same WMS as the rear from the 70's and matches the front you have (think its about 58"-59"), so go get it.
In that case, I probably would not bother with the FSJ D44 rear. Go get a Scout D44 rear that is already 5x5.5". Should be 58" WMS. Add 1/2" spacers if you want.
I'd consider buying new wheels as an alternate plan. Buying new ones for the 6x5.5" FSJ pattern and selling your old wheels will probably be cheaper than the conversions and you'll have the opportunity to re-choose both wheel style, width, and backspacing to best fit the new axles.