I'd like the story on the fuel tank and the filler outside of the bed if you can find out. I've been wanting to move mine out of the cab and under the bed and I like the way that one looks.
Joe
Not trying to hijack this thread, here's a quick answer.
The first years of the Advance Design trucks had their gas tanks under the right side of the truck between the frame with the filler tub coming out the side. The panels and suburban used an almost identical tank that rested between the frame and under the back portion of the cab. The tank and straps are being reproduced by
Jim Carter and the swap would be an easy one.