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69_340_GTS said
Do yourself a favor and get rid of that sending unit and buy a linear float model: https://www.summitracing.com/parts/cin-sn39t8
that sending unit is a ***** to set up and is highly inaccurate.

The last thing you want is a LINEAR sending unit.

That is why replacement and universal sending units are inaccurate.

The Original factory sending units are a NON LINEAR design with resistor circuits designd for tank shape and size.

Here is an old post of mine with photos of the two types of resistor circuits.
Non Linear Linear Fuel Sending Unit Difference

The style of sending unit shown in the summit link is also LINEAR. Unless it is designed for the tank it is going in or has some type of calibration circuit built into it, It will only be some what accurate at Empty (73 ohms) an Full (10 ohms).