Fuel Gauge Sending Units compared

Dicer said
The windings and shape of the restate is proportion to the shape and size of the fuel tank, and in our case (A Body) the size and the cut out use for the spare tire well. The Spectra sender would work perfect if we had a prefect square fuel tank.

I think the real question is "why can't the repoppers" make the damn thing like the OEM? But that would require actual work.