Yeah, it would get complicated and add to cost for little gain. If the seat backs do fold down at all, that gets you the length back for some shapes of loads, but I doubt they will get even close to bed height. With a DIY-able install, the seats probably bolt directly to the framework, if there is any motion, just the back.This is a prototype that doesn’t fold, but it looks like the seat and hinges are above the floor of the bed at the rear. There is a lower foot well in front of the rear seat, but I doubt the seat will fold into it.