The upper body side assembles for Suburban/Carryall and the Panel truck are completely different from one another. There is a lot of stamped exterior/interior body sheet metal on the Suburban to accommodate the rear window glass. To turn a Panel truck into Suburban, you would literally have to go back to the drawing board to do it.
Front seat riser on the Suburban, extends only up to jump seat, where as the Panel Truck seat riser extends all the way across. Rear plywood floor has mounting attachments for two rows of seating on the Suburban.
