I traded my 04 4.7 with 42k for an 04 Cummins with 163k a couple of years ago. Best thing I have ever done as far as vehicles. The 2500 looks great and has been flawless with the exception of rebuilding the front end. With the steep mountain passes around here, I will NEVER go back to gas for towing. With my overhead camper on it and towing my off roader, it doesn't even breath hard. The fuel mileage is an added bonus.