I would like to find out if my fuel pump is stock or larger without dropping the tank. Is there a way to check with a digital multimeter or maybe through the pressure of the fuel line at an X amount of rpm or something to that matter? Mine seems louder then other mustangs that are stock. I am looking to replace it with a 255lph unit but would hate to buy it drop the tank and well look it was already a 255lph or 190 for that matter. Any info would help, Thanks