Fuel tank sensors

frenchship

Does anybody knows who makes the in tank fuel sensors for Rinker, or anybody knows the resistance value for the sensors. I am getting a erratic value from my  Faria fuel gauge, all grounds are good. I even swap the fuel gauges with a another one same thing. Next step I will remove the sensor that why I would like to know the resistance value.
300 express 2007 
thanks 
Paul