The stick trucks have their horse power cut down due to the crappy clutches and pressure plates that can't handle the Cummin's torque. My 2012 2500 had the clutch go at 16,000 miles. Ram claimed it wasn't under warranty because the clutch is a consumable item just like brake pads. I claimed BS and said it was part of the drivetrain. After fighting with them they finally said they would replace the clutch if I paid $100. I told them that was fine with me. The Dodge mechanic told me it isn't the clutch that's causing the problems it's the weak pressure plates with not enough clamping force. After it was fixed I traded it in on an auto trans Ram 2500, happy ever since.

PS- I talked to the owner of Valair clutches, he said Ram has made him a rich man ever since they put the stick behind the Cummins.