Chris,there is a company that is called Radios and Wheelcovers that does work on repairing and restoring radios. They are listed in Hemmings. As a matter of fact,why don't you upgrade your radio to an AM/FM and forget the AM radio altogether?
Leave the dead Sonomatic in the dash for that authentic appearance and have an AM/FM/CD unit installed in the glove box.
I have thought about putting a stereo in the glovebox before. I hardly ever use it though. I have a FM modulator wired up to listen to FM.
