48loadmasterguy,

I agree with you..put a plug in the bottom fitting and use one of the 30 ohm senders with the tube coming out of the top.

You might have to modify the location of the suction, and maybe the drop of the float, but this is probably just a matter of bending things a little.

Having a fitting hanging out of the bottom of the fuel tank has always seemed like disaster waiting to happen to me.

Stuart