I followed
this thread over on FTE to get me started. I am using U code SD springs (4800# rating). I have 285/75r16 Toyo AT 2's. It was an easy install, I did it over a weekend while I also installed Dynatrac balljoints, replaced all the steering linkage, and rebuilt wheel bearings. I would recommend PMF as they have the shortest advertised RSK, but there is also
Sky Off-Road. While I did not do a write up, here are a few pointers I learned while doing it.
If you are swapping springs also, disconnect the trac bar first before anything else. Once you start undoing the suspension my trac bar cocked my axle and it took awhile for me to figure out what the issue was. I had a cable come along at one point trying to move it back.
Brake calipers, shocks, and your axle breather tube are going to be a horrific pain. Remove and secure out of the way all of these as best as you can, you will not enjoy working against them.
The spring u-bolts do not require as much torque as Chilton suggests, I think I went with 120 or 150 ft/lbs. I can confirm later. On the torque note, if you have a sway bar some of those small bolts holding it together are nearly welded on. Use a 1/2" ratchet and patience, because they are super tight.
It was mentioned by
@NJGearhead666 and I will back the claim of poly bushings. I replaced every rubber bushing in my suspension with poly and it made a noticeable difference. Easily the RSK and poly bushing were the best upgrade I've done yet for drive-ability and comfort. Hit me up with any questions, I'll be happy to help.