If its not a double din radio which is the larger style then Halfords do a replacement plastic unit that converts the large hole left over down to a single slot for the radio and a storage slot underneath it. If you want to still use the stearing column joystick then you need to get converter connections. Halfords supply all these connectors and will remove and fit your new radio for you. Its very quick and not to costly. Just for your reference fords sell the upgraded Sony radio for no less than £600 which is a rip off considering you can buy one of those dvd sat nav tv screen jobies.