I have them under my CJ7. Your CJ5 would be very similar minus the shorter wheelbase of course. My thinking was (and I think most Scout axle swappers is very similar) that these are the perfect width to swap and they should come with matching gears if they are from the same donor. The second issue is key.
I swapped the axles and went SOA at the same time. I had time and tools to make the caster right in the front, but did not have the money and-or tools to re-gear the difs and add lockers at the same time. By having a "matched set" of donor axles, I was able to do the swap, then build the axles in steps.
Like I said I first did the axle swap and SOA lift. I used the CJ stuff from the knuckles out and a drop pitman for steering. I did grind the inner C welds and re-set the caster. I also cut out a chunk of the pumpkin for the spring pad to sit on. I also had to "outboard" the front spring hangers on the frame. I installed disc brakes onto the rear.
A few months later I added a Lockright to the rear axle.
I ran this way for a year or two. It drove great, but did have some bump steer and I wanted to beef up the steering. I swapped on some GM flat top knuckles, high steer arms from Sky Off Road and now have beefy 1.5 x .25 steering links. I still had the Scout stuff laying around so ended up doing Scout caliper brackets and calipers and CJ rotors.
Last winter I finally got the funds and tools together for a gear swap and selectable front locker. Found a "thick" set of lower gears for the rear so I could still use the stock carrier and Lockright. Now I'm sporting an Eaton E-Locker in the front too.
I am still running (stock) small shafts, slightly beefier and serviceable u-joints, and the Warn premium external CJ style lockouts. I have spare shafts and lockouts and haven't broken anything yet. I am on 35 inch tires and will never go larger than 37s.
IMHO I ended up with a pair of axles that will suit my rig and driving style well. It's not obnoxiously wide and can be legally driven on the street as well as fit tight trails. With an upgrade to chromos and internal style lockouts, the only weak link would be the thinner Scout axle tubes.
The swap is not too terribly difficult, but requires some careful grinding and measuring. I should also note that you can save a lot of work by staying SUA. Just outboard the front hangers and use an off the shelf CJ lift of your preference. You will also have to move the spring perches on the rear axle, but this is no biggie SOA or SUA.