I have been searching for a 3.5 to 4" lift for my '04 TJ for awhile now. There are so many choices. I found a company on the net called ZONE OFFROAD. They sell a basic selection of Jeep lifts. They are advertising a 4" lift for my TJ at under $600.00 with shocks! It looks to be an o.k product for the dollar, maybe a good starter kit to build from? I have never heard or read of this company. Just wondering if any of you guys have experience with these products?  

check jcwhitney.com theyve always got good prices on stuff.  a little while ago i saw them advertise a 3 inch lift kit w/shocks for under 400 bucks.  good luck bro.  

try old man emu they have the best budget spring that i have seen. some of the other springs have alot of problems sagging . skyjacker springs suck stay away,  my  skyjacker springs saged after 2 years.