Check out www.NAXJA.com and ask about the budget boost kits. Or just order a quadratec catalog and order the 1.5" shackles and spacers or the 2.5" add a leaf kits, OR just fork over some $$ and get a complete system for about $500
I on the other hand am ordering the 1.5" shackle and spacer kit for $129.95 to go on my jeep.