I am trying to attach a couple of photos of the port fuel tank. I am a little rusty at it, so not sure it is going to stick. I can email them.
The tank is 21 wide x 19 tall x @106 long. The part number is visible and it is a Florida Marine tank.
Access to the sending unit will be via a hole in the cabin floor. It is under the rear port cabinet and in the back starboard cabin floor.
The one photo shows a view to the stern on the port tank. It gives you and idea of the room, or lack of, to work in.
PM your email if the photos don't work.