I have a 1/2 ton W100 with 3.91 gears it pulls fine, but if you want to cruise in style long distance with the cruise control set at 75 then you want my 2015 DRW Cummins Dodge!
Seriously the 1/2 trucks do not get it! You are most likely the Guy I am pissed at driving like an old Lady and in my way! Get and drive the right truck for the occasion! Yes sometimes we have to due with what we have. The OP asked for advice and the best was given.