just another quick query. My S3 doesnt have the auto-dimming rear view mirror. My last audi did aswell as auto-dimming wing mirrors. Now how easy would it be to fit the rear view mirror as going back to a normal one is beginning to hack me off as the drivers up north are ignorant gits and dip for no-one. Im not bothered about the wing mirrors but I want to fit the auto-dimming one or photo-chromatic as its called. Hopefully its not too difficult.