I know the guy that purchased the STC and tooling about a dozen years ago. He tried to have one made and it didn’t work out very well and he ended up buying a used door from me. I don’t know if he still has it but I could probably track him down.
I believe that the original STC was owned by Courtesy and it ended up being auctioned when Global (I think) closed in Lakeland.
The guy that bought it was one of my parts customers from the Virgin Islands.
BT member Craig Johnson has an Aztec with one that he is considering selling. There is another one owned by a BT member in the Aztec thread.
viewtopic.php?f=49&t=188964You could get the STC # from one of them to research who owns it now.
I don’t think any have been made in the last twenty years. The tooling was very good quality and was sold with enough parts to build a couple of them. It is not a simple undertaking though.