Both front and rear axles are GM corporate 10- and 12-bolt-more than enough for the weight of this rig. With 4.56 gears, the welded rear and ARB Air-lockered front diff easily spin the Swampers mounted on factory rally wheels. Shannon even welded MRT beadlocs on the rims for low-pressure situations. The suspension is simple spring-over, reversed-shackled Wrangler leaves in the front, and Shannon's famous 3/4 elliptic springs in the rear, controlled by a four-link system and a Rancho RS9000 shock at each corner.