I actually have seen these stretched trucks from time to time. I wonder how the conversion affects the towing capacities? They seem to be a way to get more passenger room, albeit at a high price. ...
My 4 door long bed "beams" enough without adding 3 or 4 feet in length. If you saw how most extend the frames you wouldn't tow anything with that truck.
Even my truck takes half a football field to turn around. I would hate to drive this truck.