I test drove a new 05 2500 quad cab 6 speed over the weekend and really don't know what to think of it. Maybe I've been driving gassers for too long. Didn't act like it had the power everyone suggests in these forums. It did loaf along at a steady cruise though, like it was just idling. Shifting through the gears seemed like it ran out of RPM before i needed to shift. With a red line of only 3200 I could see why. Low rpm motor, will take some getting used to. Stepping down on the accelerator didn't seem to do anything at first, then all of a sudden it would take off. New truck I didn't really want to trash it. The CTD must need to be loaded before it comes alive??