Wel i heard i could use cherokee springs in the back and it wiould stretch it.but im askin like general mods to brake lines and stuff like that. i know its not as easy as just put on cher. springs and your done.
Its a JeeP thing ... I Dont Understand!
use XJ springs and move the spring hangers to the rear of the bumper. basically make your rear bumper your rear crossmember and hang the shackles from that. that with the XJ springs will give you a decent amount of stretch.
as far as brake lines....just get longer ones to match the amount of stretch and lift you have.
yeah, you will have to trim the rear body or do a full comp cut. just depends on how much you stretch. you will need a longer driveshaft. you will need to relocate the shocks. you will either need a fuel cell, or a comp style tank like genright makes to move the gas tank back. you will also have to relocate the front (of the rear) spring hangers when moving the whole spring pack back.
here is the genright setup...kinda gives you an idea of how it would work...
you can see how mounting the shackle hangers on the back of the rear crossmember gives you stretch.
you can get this kit which includes the rear corner guards that move the wheel well opening back to accomodate up to a 5" stretch, which is just about what you would be getting. it also includes rocker guards to match and a new fuel tank and tank skid that keeps the tank under the rearend (no fuel cell needed) and makes room to move your rear axle back up to 5".
it really doesn't get any easier than that. if it were me doing this, i would use the BTF rear frame crossmember/bumper/spring hanger and the genright gas tank and corner guard kit. after that, you're left with relocating the shocks, brake lines, and lengthening the driveshaft.