Hi,could anyone advise me on the Sony CDX-GT30RN headunit please? I have a 2007 campus sport (with expert/udpate cd payer) and according to my 'research' the sony player is renault specific,and should drop straight in and work with the display and the steering wheel controls.Ive found a couple for sale on ebay etc,but some have the blue 'function link' printing covered over on the box with what look likes a white blank sticker,could anyone shed any light on this? are there some 'iffy' examples that dont work with the controls/display?? i dont want to buy a head unit then have to buy an adapter as well (as lose the display).Any help greatly appreciated.Cheers :driving: