Which Spring Enhancement for Ram 3500 hd DRW crewcab longbed

Agree with Sleepy. Do the mods one at a time. Newer trucks for the most part have stronger frames with less flex, stronger axles, and better OEM shocks. Where trucks often fall short is with the factory supplied tires and that will not be true with your DRW truck.

I would have waited for the 2013 Ram 1-ton with its new stronger frame but such is life.