HUskyBob, I like the visibles, but they are pricey, and I can only imagine parts getting harder to find. Plus, I really don't understand how they work, I've only seen them in pictures

As far as pumping, I assume you are talking about the actual internal pump mechanical parts I mentioned before? Talking with the tank vendor yesterday, he mentioned using a fuel pump on the tank that would push fuel though the the meter inside the pump, turning it into a dispenser that will measure. Did that make sense to you? I'm a bit fuzzy on the terms and whatnot, so I apologize for being confusing.