Gently used OME 866 springs. Heavy spring rate, will provide about 2" of lift to an unloaded truck, about 1" of lift to a heavily loaded truck (80 or 100).
Learn all about the coil springs and rates here: http://www.cruiseroutfitters.com/tech_OME_coils.html
Buy them new http://www.sleeoffroad.com/products/...es_springs.htm
Or give me $100. free delivery to the next RS meeting.