87-95 wrangler springs will have a much better ride than the cj springs but they are wider and longer so mods must be done to fit them.. For cj springs I don't think you can beat BDS (big dicks suspension), they have a LIFETIME guarantee, if you break or bent their springs you will get a new one at no cost period. I have used the guarantee and it is what they claim. If you go 4" or over you will need drop pitman arm, tcase drop, shims for the rear (may be included, cant remember) longer brake lines, I think that's it. under 4" should not need these items, although I would put on longer brake lines from the frame down to the wheel.