I converted a 1993 Chevy xcab K2500 SRW 4x4 to Cummins from original 6.5L in 2004 @ 110K. NV4500. Love the truck. Pulls amazingly, and mileage is very good. 285K on truck, 340K on engine. 50% mileage is pulling trailer. No engine issues. Turned up power, but kept 2500 RPM of truck engine (not Dodge). Did the conversion myself. Really like it.
Have cruise, bone-cold AC and everything still works like new. Thinking paint, but never new truck.