Well,...I normally would simply list this in The TradeMart, but since you brought it up.....
For a number TWO radio, I purchased a Narco Escort II radio (720 channel Com and VOR reciever all-in-one) from another 170 Assn member, which fits in a standard 3 1/8" instrument hole, and will serve as a COM radio OR a VOR with built-in CDI. I have since changed my mind about installing a VOR at all in my very original panel, so I'll sell it for what I have in it. I never installed it. It is used, and was represented as in good condition. Buyer should have it checked and will purchase it "as is."
Narco will email/fax a wiring diagram or a harness may be built by your avionics shop from their website http://www.narco-avionics.com/
which has online pinout/wiring diagrams and operations manual available free online. It looks very nice and clean. ($300.) If interested, contact me via PM or my email found on the cover of the Flypaper.