Bill,
I believe you want the TB-9013 from Smiths.
This is the six-hole side-mount fuel sender.
Contact
APT Instruments International Inc.
You will have to cut/adjust the arm. I fashioned the shortnened arm to accept the float by wrapping the arm/wire around a properly sized socket. Make it tight. Fishing the float out of the tank is no fun. Get the arm 'bend' correct too, so it can read the level accurately.
Don't forget the aviation sealer.