For the rear, figure out how much bumpstop you need to add, drill a 3/8" hole in the center of the bottom coil perch, get one rubber hockey puck per side for every inch of bumpstop you need to add, drill a 7/16" hole dead center of all the hockey pucks (the rubber will contract after drilling, thus the need for a slightly bigger hole). Get some 3/8" grade 8 bolts long enough to go through all the hockey pucks and through the spring perch, but not bottom out on the top of the axle tube, use a washer and nylock nut, tighten it up, all the bumpstop you could possibly need for under $10. I have no idea what you guys do for the front.
