I don't know if you'll find anything that will make it grunt real hard. I've got an 01 Duramax in a dually- pulling my 5th wheel was easy- and that was close to 26k GVW. I had a stock trailer with 9 big horses and ran away from a guy with a Cummins (dodge) hauling 3 cars on a slant trailer. And they added 65 HP to the D'max since.