I like that idea, I'd love to do a 350 hp Class A pusher chassis under a F150 4 door cab with a Ford Raptor front clip. then build a low profile conversion body like the RumRunner only longer.
But its just a dream, unless I find a buyer for the Rumrunner, then its Game on again!!
2001 GMC 6500 Topkick, 22' box, dropped frame, designed to fit into a 9' garage door. 3126 CAT 6spd Man Lo-Pro 19.5's w/ 3.07 rear axle ratio