Greetings!

Another possibility. I was just wandering around on ebay, and picked up a complete, full size Tempest control panel.

Since this is the only game I am really targeting for heavy use, I might be able to retrofit the original control panel with an I-PAC (or other controller) to build a self contained, dedicated Tempest / MAME box. Using one of those Tiny-PCs, I might be able to fit it all into a small box... Hmm...