This is the particular radio I have mounted in the stock cd player location.
http://www.cobra.com/index.cfm?fusea...category_ID=30
I purchased mine at a local truck stop (Pilot) for like $60. It fits perfectly in that location and I used the OEM cd player mounts (aluminum) to mount the CB.
As far as antenna, I personally use the FireStik 4ft (also from Pilot) for like $24.
http://www.firestik.com/CatalogFrame.htm
I mounted mine to the rear door using a side body mount that grounds to the body ($6 from Pilot). If you mount it like PBKid to the cladding the mount will rest flat. If you mount it higher up on the rear door as I did you will have to shim the mount with some sort of triangular piece to take the angle out as the antenna will want to lean forward due to angle in sheet metal around half-moon area of door. (In the above FireStik link, click on "molded side mount" and then in article...click on blue "show me the mount".)
see my gallery for some pics as far as ideas for antenna placement & radio installation.
Others here use mostly magnetic mount roof-top antenna's.
Hope this helps!