The iPod Panel Dock fits all first, second, and third generation iPod devices. It does not fit the iPod Mini, or any of the iPod knockoffs that are out there. The iPod Dock can be installed to allow access to either the top plugs or the bottom plug. Just flip it the way you want it to go and mount it in your panel. The top plugs are useful for simple headphone-only connections, while the bottom plug allows you to fully integrate your iPod into your intercom and power system (a separate cable is required.)
No, it does not have speakers.
No, it does not.