I must be missing something, 2.7, 3.5, in a truck you plan on hauling stuff with does not sound kosher. Get the biggest engine they put in the thing. The biggest gas burner or the biggest diesel if you want one, this is a truck not a compact car.
“If you do not conquer self, you will be conquered by self.” Napoleon Hill The most difficult thing to understand during conversation is silence. Thoreau
