That Cummins engine is one of the greatest diesels ever. From Engine Performance to Suspension Performance, we have the best setups for your budget. From 2″ to 8″ and 35s to 40s we know these tough trucks inside and out. If you haven’t heard that engine brake open on these before, you would think a big rig was next to you. With that solid axle and the 2500 rear coil spring setup, these are some of the strongest and best riding full size out there setup correctly with the steering and suspension.