My Truck, a 2005, 2500 with the Cummins TD HO is the best truck I have ever owned. Speaking of owned... thats exactly what it does to the Ford and Chevy. It's the most quiet, fuel efficient, smallest engine, and still generates the more power. This truck is amazing. though the 48re is letting me down after 90kmiles ( having trouble shifting in between first and second gear) I still rate it a 10. I have every performance upgrade you can do to the engine.... minus twin turbos and have been running the stock tranny. I'm happy it's lasted this long.