INFORMATIONAL POST FOR BELLTECH LEAF SPRING CONVERSION
This worked one mine, so don't be whiney with me if it doesn't work for yours.
Necessary Parts:
(2x) Belltech Leaf Springs 5974 D21 HB: http://www.summitracing.com/parts/bel-5974/overview/make/nissan/model/d21
(1x) Whiteline Upper Rear Shackle Bushing W73252: http://www.whitelinesuspensionparts.com/proddetail.asp?prod=W73252
(2x) New Bolt, nut, flat washer and lock washer TBD [still investigating this option]
Optional Parts:
(2x) Universal Adjustable Lowering Blocks 1.5" to 3": http://www.speedwaymotors.com/Adjustable-Lowering-Block,2153.html [still investigating this option]
(2x) Shocks. At stance, my truck currently measures 15" eyehole to stem sitting collapsed on the shock which tells me I need probably more like 9" shocks. I'm going to remove the shocks completely and see where natural position is. This should give me good reference for new shock selection.
(2x) Airbags. I may put in airbags between the live axle and the frame, not sure yet.
You'll use both bushing sets that come with the leafs. The front will get the bushing and sleeve.
TOTAL MINIMUM IN for my setup: $350 for the setup. Can probably find discounts and free ship to reduce.