I like tailgunner. You could paint the car like a WWII bomber with faux shadow rivets and seams and airbrush the rear to resemble a Plexiglas canopy with twin 50's sticking out the back. Contact RapRap - he is a designer. He might be able to do a computer rendering.
Still shopping for a new chassis? I know a good chassis man in Ohio. Advanced Chassis, Antwerp OH, 419-258-2100.