Can I save this fuel tank sending unit?

RustyRatRod said
Whether you realize it or not, all gauges are an approximation. Even the factory stuff. Find a happy medium with the new stuff and use it. Get used to where full and empty is and every point in between. Calibrate yourself.

This is going to be the easiest thing. All of the reproductions have linear resistance values, but they are new, consistent, and not too much money.