I like the look of the way your rear window is done. The little cargo area given up for the cab addition wouldn't matter that much on a rig like this anyway. Who's going to be hauling firewood or whatever in such a nice truck? The picture of the '57 that someone has built looks good, but you're not gaining any interior space, that was the reason for all this anyway. The rear window area looks like it may have come from an earlier model GM pickup cab and with the corner windows it looks practical.