Keeping the auto would be easier, but I bought the 62 not running and will try to get the truck running so I can determine if the auto is in good shape. The benefit of the 4-speed would be less parasitic draw from the auto and more perceived power. The draw back would be having to source a 4-speed pedal bucket, the cost of conversion parts, and converting things like the neutral safety switch, etc.
The other thing that I am still considering, if it is possible, is using 97 FZJ80 axles under it. Welding on leaf spring pads and keeping the truck sprung under. I know the 80 series axles are a bit wider by 5" I believe, so 2.5" each side, but would like to use them as they have low miles, 4.88 gears (good for the 35" tires I want to run), all new brake rotors and calipers, and an Aussie Locker in the rear. Not sure about steering linkage clearances without going to a high steer conversion and I have read on the 60's board that the leaf spring perch would have to be very close to the pumpkin housing. Not only that, but the tires may get into the leaves even if it could be done.
Time will tell.