Sold my pristine 2002 8.1L 2500HD for this truck with 387K KM on her. We got this truck for a number of reasons:
1) Long bed. Gives us the option of getting a Grandby vs Hawk or having a Hawk with lots of storage space
2) Diesel... much better range. First tank of fuel already shows a 50% improvement, from 10 mpg to 15 mpg in city driving. PLUS the tank is bigger (36 gal vs 26 gal) and I can easily up that to 62 gal by replacing the existing tank
Having 2x the miles on it has not been TOO big a concern, as the engine hours are low, and it has little to no rust.
Heading out tomorrow on a 4000 mile round trip to pick up a 2012 PUMA to put on this rig.