....this didn't sound like the original gas tank in my 37. Mine has only one outlet. There is a system in the tank to vent fumes out the bottom of the tank though. Perhaps someone else had it lined/coated and it is coming off. It'd be tough.

Perhaps this link will help?

http://i140.photobucket.com/albums/r19/LutherParris/Ole%20Blue%201937/IMG_0001-1.jpg


1937 Chevy Pickup
In the Gallery
1952 Chevy Panel
In the Gallery
More photos
1950 Chevy Coupe
Pictures!

I'd rather walk and carry a Chevy hub cap than ride in a Ferd.
I can explain it to you, but I can't understand it for you smile