Big Barn, thanks for the pics.
Yes I am looking for a tank to act as a supplemental fuel tank, that I could use to refill (partially) the main tank, while driving. Seems I read somewhere that a gravity fill tank in the bed is against CA law, not sure on that one. I am not opposed to a pump though. Even if I can get about 6 gallons or so, I would be content.
I want it as a safety, in case I happen to not pay attention and want to avoid being stranded, while 5th wheeling. I cannot go without stopping to pee long enough, to warrant a regular in bed tank, nor do I want to give up that much bed space all the time. Looking at those like the Titan 52 gal replacement, the cost is prohibitive for me.
Thus if I could build one that sits in the wheel well, in front of it, that would be about perfect. I usually carry a 6 gal diesel fuel container, but I have to secure it to prevent theft, and it's a hassle to lift and fill the tank with.
Not really concerned, at this point with refilling any other vehicles with it.
Where would I look, Northern Tool, for said pumps? An in tank pump would be sweet, but would have to be a junk yard thing I suppose.