Has anybody bought a gas tank and/or sending unit from this company? Feedback Wanted

Thanks much, that's good enough for me just knowing it works!
I would rather have a little reserve left when the needle hits E than the other way around. I figure I can try to calibrate it a little using an ohm meter and bending the float arm with just just enough gas in the tank to where it starts to be able to siphon it through the pickup tube, as others have stated here.