Be careful with the Dodge Cummins combo, they will and do AC190XT trick. Tear everything out behind the engine. My 92 D250 Diesel has the most factory HP and torque and will squeal tires and do things that are NOT healthy for the drivetrain. It has yet to break anything, but then I baby it too, seen and heard too many HORROR stories. That was the reason Dodge detuned the engine in 93, they couldn't afford all the transmissions, drive shafts and rearends that the Cummins were destroying. lowest mileage that I can get out of her is 20mpg with a 32' GN loaded with farm machinery. Doesn't back off on any of the Interstate hills here in the upper MidWest.