To get ready for the install of Slee's Double Swingarm Rear Bumper on my 1999 LC with 95K miles, I did some rear suspension upgrades:
1) I pulled the old rear upper control arms, the bushings were worn and deteriorating, and I replaced them with MetalTech's new adjustable length Johnny Joint UCA's (links)- poly bushing on one end, Johnny Joint on the other.
2) Next, I pulled the Old Man Emu 866's. These springs were in very good condition and gave me a plush, excellent ride, but I wasn't sure that they would hold up to the weight of my bedkit (double drawer), ARB refrig, and the new Slee rear bumper with dual swingarms for the tire and ladder with rotopak kit. In place of the 866's, I installed Slee's 2.5 Heavy's. (Let me know if you need 866's).
3) I got two buddies to come over and we installed the Slee rear bumper. This bumper is heavy and beefy, and I am very happy with the craftsmanship and the quality of the Anthracite Powder Coat!
I will post up some photos after it stops raining.