if you want factory P/S there is really nothing that needs to be hacked up(shaft is cut a wee bit where it goes into box) its pretty much bolt on. I added OEM PS to my 82 when I got in 15 years ago, parts were no easier to find then, then now. I happen to find a write up(in print form) by our own Jim C. that showed how to do it.
I had one shoulders done 6-ish years ago, my other is not far away, but of all my Cruisers(even the 100 series) my 82 Fj40 is the easiest to drive with a bum shoulder, the wheel(and shiftier) is just in the right spot. Still have two 45's with manual and I know it after a day of driving(and shifting 3 on the tree)
there are a few options, you will spend about $800-1500 on parts(plus $ for labor) My guess on labor, depending on who and where, $500-700.
In my case I started with an new empty PS housing for a fj40(can still be had), then used solid axle mini truck box for parts for the internal guts of the new box(guts are the same as fj40), OEM PS seal kit(again, same as mini truck) Sent that to Redhead Gear in Seattle to be put together. The new box bolts right in-place of the manual box. The PS pump and bracket(fJ60, same as 40) will bolt up to your 82 2f, new steering rag joint (or whatever its called, not required but I did) Manual steering shaft is cut just a tiny bit. That's really about it. You can get the high pressure hose from NAPA(for $40-ish)
As much as I am a OEM nut, the PS cooler tube is not needed, I used a small trany(or maybe a PS cooler) cooler instead. After I did all this to my 82, I ended up finding 2 factory PS boxes locally, one had the cooler tube......never had the desire to put the tube in, but also not getting rid of it
GM PS would not be something I would do on a 82 myself. But you could do the standard mini truck PS, its the same as above but uses a mount to get the same position as the factory PS box, you can save problem $400 by going that way. (remember fj40 PS is the same as a solid axle mini truck PS)
Or electric, which sounds good, but I have never driven that set up myself to comment
