Piano-Pen

I am in the process of rebuilding a 62 F85 Cutlass Convertible. The trouble I’m having is I can’t seam to find a gas tank for the car. Does anyone know of a tank and filler that would work as an option. If not does anyone have the some measurements for the tank will help in my search for something that might work. Trying to find an options so I do t have to go with a fuel cell in the trunk. Thank you all for your assistance.

1962 F85 Deluxe Cutlass Convertible Found in a barn in Wisconsin. Everything is complete except it is missing the gas tank.