8mpg at 70 mph is one reason not to get a gasser in a 1 ton dually. Another reason is resale. No one wants the biggest baddest truck on the road with the smallest engine available. Another reason is you live in CO. Unless you plan on camping in NE and KS only, your 400 hp gasser at sea level will be a 280hp dog going over every pass in the mtns. Say hello to 2nd gear wound out to maintain any speed.
For your sake and everyone stuck behind you going up Monarch, Hoosier or RedMtn pass, don't get a gasser! Haha
