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.....