Yeah like what has been said you need big leaf springs on the back to help with the weight. Add air bags and a sway bar if needed. The guy who sold me my Lance TC told me if I didn’t have this suspension consider another truck that does. Thankfully my 2nd Gen does and I added air bags and a hellwig sway bar so my wife can drive it. It may be a cold day in hell when she actually does but hey.I have no idea what the Fiat engineers were thinking when they put coils springs in a cummins truck... Detroit figured out out it was a bad idea in the early '70's... trade in value of your truck should be really good.... I test drove a 2500 and ordered a 3500... very little difference in ride quality.... I know this is more than a bit harsh, but? Another idea would be a travel trailer, lots of 2500's tow them quite well.....