Scout axles are Dana 44s, and are generally NOT that difficult to get into a YJ - in fact, the front spring pads are almost the exact right width. The guy who said you have to do a lot of work to get the front in (called it a PITA) is most likely confusing the CJ setup for the YJ. The YJ is wider, the spring pad location is wider, and the front will actually bolt under the jeep - EXCEPT that the castor is 0 degrees. In addition, the tie rod location is such that if you leave it you will have no turning radius, so most people redrill the tie rod location to get their turning radius back. If you are seriously interested in this swap, email me and I will send you the url for Larry Soo's excellent article on this exact swap.
The rear scout axle makes excellent swap material, because the axle shafts are the same length on either side, so it makes it easier for carrying spares. However, the front diff IS on the wrong side, so you WOULD have to switch to a Dana 300 transfer case.
I am in the middle of the swap I would recommend: Grand Wagoneer axles. mine are from an 87. 86 or later GW axles are D44 front and rear, and in addition:
1) Diff is on driver's side - don't have to change transfer case
2) knuckles are 1/2 ton knuckles - stronger than scout knuckles
3) tie rod is ALREADY on the top of the knuckles.
4) tie rod and drag link are heavier duty items than either YJ or scout
5) not any more difficult than scout as far as maching to get them in.
6) GW axles use INTERNAL hubs, rather than the external CJ type hubs that scouts use. These hubs are cheaper and stronger than the CJ internal type.
This is another viable option for you to consider. I am about 1.5 weeks away from finishing. Let me know if you want more info about this swap.