There are two really tough things with the SAS on a 2nd gen. 1) A lot of stuff has to be removed. This is not as easy as it sounds. To quote CoryL, "This was hard to do and I used a plasma cutter, I can't imagine doing it with a sawzall or cutting wheel." Here is a pic:
2) Steering. The SLA Explorers are rack and pinion. With a SFA up there, you will need to incorporate a traditional style steering box. You will also probably need to swap over to a traditional steering pump. The r&p pump will prolly produce too much pressure for the steering box. All steeing links will prolly have to be custom fabbed to do correctly.
As far as cost. I have heard of total cost from a couple of custom fab shops in the range of $5k-$8K + axle. As far as a DIY project, the parts cost involved is quite a bit more than simply buying an axle and a steering box!! Please remember all that is involved. Axle, steering box, steering pump, custom steering hoses, misc. steel plate and tubing, leafs, leaf perches, brakelines, driveshafts, possible custom pitman arm, custom steering links, shocks, custom drag links, regearing, wheels/tires, etc.
It is not a cheap job, even if DIY.
Robb
BTW: $14000?

? That is pretty ridiculous!!!