9. The S60 has a husky 9.25-inch ring gear, making it the champ in the strength department. Ours also had a Detroit Truetrac LSD, 3.54 gears, 35-spline axles, Torino axlehousing ends, a 52.25-inch width for A-Body Mopars, A-Body leaf-spring perches, and Wilwood 11-inch Dynalite disc brakes. Note that use of a Dana 60 rear requires the exhaust exit ahead of the rear axle. If you prefer an over-axle exhaust, RMS recommends you use an 8¾-inch Chrysler rear, or a Ford 9-inch.