I see lots of folks rear end sagging, this is dangerous since the nose of the truck tends to be pointed skyward, less control in emergency situations. Simple Fix is the Firestone Ride-Rite airbags, the air bags level your truck/ trailer load on the rear end of your trucks. This is my second 3/4 ton truck with air-bags. I sold my 02 Ford F-350 crewcab dually 7.3 diesel; because the Dodge 2500 Cummins Turbo diesel outperformed the f-350 with the air-bags. Also the bags enable me to safely tow the Dodge 2500 CTD 13,500GTWR I have towed up to 16,000GTWR although not recommended. The Air-Bags can support 5,000lbs each or 10,000lbs combined @65psi.