OK. Thanks.
It looks as if drum-brake technology is becoming a thing of the past. I called my usual mechanic shop to ask whether they turn drums. They said not anymore. A second shop said, with some reluctance, that they COULD do it but then started talking about what a long and complicated process it would be. (???) I could tell they really did not want to do it. The person who answered the phone at a third shop wasn't sure whether they could work on an air-cooled VW. He did not know what a Karmann Ghia was. After I explained, he said they seldom work on what he called "antique beetles."
If I get this set of brakes going well enough, it looks as if the NEXT brake job after that will likely be a disc conversion (if I can find someone to do it right).