Bendix King KX-125 digital nav com. 14v Flip flop standby for both com and nav. It has a built in CDI, so you don't need panel space for an external CDI. I have the tray, install manual and connectors. For some strange reason, I can't find the pilot's manual, but can be obtained. A great secondary radio!! $900 PM for more details.
Here is a brochure about it-
http://www.arizonacloudbusters.com/documents/Manual-KX125.pdf