Re: Looking for used yj springs.
I don't know how much you want to spend, but last year I had to replace my YJ's springs. I didn't want a giant lift, but I couldn't see spending the crazy cash for OEM replacements at a dealer.
I ended up getting a "Rough Country" 1.5" lift for my Wrangler. It was about $450 shipped if I remember right. It included springs, shocks, transfercase lower brackets and longer bolts. It was the lowest lift I could find without going back with stock springs.
I installed it myself(was far from a fun job, but I guess it would have been easier if I had undone the trtack bars, lol) and it has done great so far. Not enough lift where I am in fear of flipping on highway turns, but enough clearance to stop my 31's from eating into my fenderwells.