Hi I have a mk3 astra and it has a cassette player in it but I want to change it to a cd player.Will I be able to replace the radio and still have the radio display in the dash. Will I need to get a cd player from another astra? Also I am looking for a tailgate spoiler (the one that goes along the top of the rear windscreen). Is there any good spares places anyone can reccomend. Thanks in advance Gray W Leicester