I thought that Belltech made lowering leafs for the NBS trucks but I couldn't seem to find the part # so I took them off of my last post.

 

if you wanted to go with a lil lower kit, DJM makes a kit that just relocates the leafs to under the rear axle instead of about. this doesn't affect ride quality near as much. also the front uses lower control arms so you keep the stock springs, which means the closest to stock ride you can get.