Re: Planning my lift, looking for a little insight.
National Spring makes a 6" leaf spring kit for YJ's and CJ's for around $1000.
You can't get any better than National Springs. It is spring under. You'll just have to get all the extra's--shocks, steering fixes, longer brake lines, sway bar- trac bar disconnects (or just leave em off until the springs break in)
Slip yoke eliminator kit and cv driveshaft, etc. I wish I'd spent the extra bucks to get these springs so I could fit 35's. I went with a 4" kit (still had to buy all the extra's to get it right) but I can't run 35's unless I put on an ugly body lift or go spring over which would also be big bucks. I run 33's with no problems. I didn't know about the 6" kit from National Spring until I had my kit installed and paid for.