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. ...
Looks like the cab to axle length (using the back of a regular 2 door cab as the measuring point) is probably somewhere between 8 and 9 feet. If it was a commercial flatbed truck, that would equate to a truck with about a 14 foot flatbed and a regular 2 door cab. With a 4wd front axle, that would take awhile to turn for sure.