About 10 years ago on a hunch, I called Jerry Stahl about a set of his fenderwell headers. He was recovering from a racing accident, he had someone go to his warehouse while we talked, the guy came back and said he found one set. I bought them and installed them on a silver blue 62 Bubbletop. They fit fine, but none remaining new that I’m aware of.
I agree about Wilson headers. I don’t think he is building any fenderwell headers, but I can certainly vouch for his great quality!!