Hi Jim
On mine the fuel filler is mounted high up on the side of the body, above the vertical vent. I have no idea what the tank comes from but i am sure someone will know nova 016.jpgnova 015.jpgnova 014.jpg

On the passenger side to compliment there is a similar cover to the filler cap. This holds the switch for the roof. On both sides they sit flush to the body work.

Food for thought !