Not sure if this guy is still doing them
https://67-72chevytrucks.com/vboard/...d.php?t=705093 may try to send a PM.
I had a local machine shop do some custom engine fender badges for me (not what you want). Cost quite a bit, mostly due to design, programming and set up. Had few extra made because it was not much more. I did get the machining file as well. May offer the extra badges up at some time.