[Altec]

What about doing a blazer tank, but adding a "hump" to the bed so you can raise it up higher?

I remember reading somewhere about a guy who put a tank between the frame rails in front of the rear axle. He did the same idea of raising the floor. I never saw the finished product though.

At one point someone on ebay was selling fuel tanks meant to go in the bed that follow the wheel wells. Thought those were cool, but haven't seen them in a while.