I’m a new owner (6mos) of a beautiful (see photos) factory built
Classic Roadsters Duchess with Pinto engine and Chevette rearend with a
4 speed.  She runs great, requiring only a little tuneup.  The wife and
I have had almost constant grins since we got her. The one thing I
don’t  love is the gas tank.
   One of the previous owners has
placed a larger tank that is so big it fits under the frame rails
rather than up in the rails where it is protected.  It tends to drag on
low spots and makes it more Pinto-like than I’d care to have.  I’ve
looked around and can’t find the  replacement. I can get a marine tank
the right size and make some brackets,  but wonder if anyone has a tank
or any ideas on what might fit.   Thanks in advance.