67-69 convertible top frame

I don't think production numbers is so much a factor as is the rust. They all rust but the verts got more water inside. Top left down in the rain multiple times or "Rag" of a top on a car laying in a field. The "high and dry" top frame is one part that didn't rust away.
In my 10 years at this forum I've seen about half a dozen verts that were more rust than scrap metal. A lot of the salvageable and highly sought vert only parts sell quick. The top frame can be the very last part available.
I've seen want ads for various pieces of the top frame too, although few and far between. Good luck