Help with 1957 3100 fuel tank sender

[Dan87GT]

Hello....the fuel gauge on my 57 truck did not work when I bought it.....it was updated with a under the bed tank...I have no idea what the tank was originally designed for...I can see the connection for the fuel level sensor wire...pic below...here is my question...I am purchasing a new gauge cluster for the truck....there are 3 options for the gauges...stock sender....GM 0-90 ohm...and a 240 to 33 ohm sender......is it safe to assume this tank has a GM 0-90 Ohm sender?....

thank you!...