Source for fuel tank

[SBD]

First off, let me say that I don't have a Seacraft. I do however look here a lot because the tech here is drama-free and always amazing. This is THE best repair forum on the web!

Now to my issue: I pulled my aluminum gas tank from under the deck. Inspection after it was freed from its foamy cocoon revealed that it needs to be replaced. This tank is not a "regular" size so I will need to have one made. Any recommendations on a source??

Thanks!