I'm not sure about the wiring in your year vehicle, but here is one to consider:
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1234621743
Not sure what years this radio showed up in vehicles, but I know it's the same one as in my 94 E420.
As far as the center console wood goes, it snaps up. I believe after you remove the one screw holding it down, start pulling it upwards while holding down the back window switches. The instructions are buried in here:
http://www.peachparts.com/Wikka/W124Stereo
Willy