Restoring a 40 year old Airstream Shower Pan

When we first bought our Argosy is was apparent that things were old, and needed desperate repair. Of course there is always the option to buy "new". What is the fun in that? We decided early, that we were (to the best of our ability) to try and restore, refurbish, any of the original Argosy interior, while implementing our own style. Our Airstream Argosy's Shower Pan was one of the pieces we...