[skyking]

Hat man, you have the perfect opportunity to make a custom bed/cap combo
The stepside looks cool and is not horrible aerodynamically, but using what you can get here, you can make it way better. Skirted rear tires, slightly longer bed, plan taper to a minimum 4' width ( a truck is not a truck unless it can haul a 4' wide sheet of whatever )
Frenched in tail lights, or maybe modular ones that will easily move from the normal position to the boat tail you will design for it, along with the lighted license plate mount and stub bumpers.
Maybe a slide out stub bumper on each side with tail light built in?
Sorry, just dreaming out loud. Back to your regularly programmed show.