Aftermarket fuel gauges -- Sun, Auto Meter, Stewart Warner etc -- are made to work with "normal"
old-fashioned domestic cars like Ford and Chevy. That does NOT mean that Ford and Chevy
tanks use the same calibration values -- they DON'T. But you can get a nice 2" round
gauge to work with either of those brands of car tanks.
SO LONG AS IT IS AN OLDER CAR. I have no idea what they are using these days. But the
package or the catalog should tell you what fits what.
You can also buy sending units to install in a custom tank -- with that same old Ford
or Chevy calibration.