Welcome neighbor! Obviously you have good taste in trucks.
I remember seeing the fuel tank swap-out discussed a few times. You might try the search link at the top right corner of this screen and try a 'bolt google search. Also, I know that the vendors out there sell under-bed tanks custom made to fit our series. I saw a 58/59 truck a couple weeks ago that had the fuel filler in the floor of the bed, near the tailgate, so I know folks out there are doing it.
Bill
