Very interested to know how your buddy makes out with the new 6.6, I have been tossing the idea around of the new 6.6 gasser but I’m just not sure. Since I dumped the Wellcraft I just don’t feel I need the big Duramax anymore but at the same time I’m a power junkie and I’m just not sure the 6.6 would do it for me. I had a 6.0 Vortex in a 2008 and didn’t drive that truck for 24 months and dumped it. Couldn’t stand the fact you had the float the valves in it to pull any hill with even the slightest load let’s not even talk about the mileage it got. Like you I would like to get rid of the extra cost of purchasing a diesel but at the same time, it’s nice to have the power. With a moderate load say 5000# my Duramax still gets easily 700 km a tank and empty at cruising speed (115) 1000km is obtainable. More than once I have driven from work in Dawson Creek, home to Cold Lake, then up town and back, (I live 22 km out of town ) then the next day to Loydminster all on one tank of fuel.