Ok, sent an email to Matrix.

Here's the body of it, if you want to re-use it as a form email.

My name is ________. I found your company via an internet search. I am one of a group of hobbyists who collect and modify a car audio player called an Empeg (empeg.comms.net). This player is no longer made so obtaining new parts or alternate parts can be difficult to impossible.

As you have probably guessed, I am interested in having a part made for the player, specifically buttons and knobs. The size of the run would be approximately 200-300 sets (4 buttons and 2 knobs) in 5 colors (40 - 60 sets per color). Is this size and type of project something that you would be interested in discussing further? If so, I can provide further details and pictures. If not, can you recommend a casting company that may interested?

Thank you for your time,

Best Regards,