Mid engined layout (engine where the back seat goes) and a central front diff (if in fact that Sorento actually has one).

All in all start with a spaceframe chassis, install everything to it and then cover with a fiberglass skin that looks a bit like a Sorento. That's all they are....no resemblance to anything you could register on road without the $300-400 K they spend.

"Pre-runners" or that sort of trophy truck generally are 2WD, too much weight in a 4WD system for little if any potential gain when gaged against the extra weight (100kg+), also the reason for the mid engine layout.. short rear driveshaft (if any).