QuickQ

Hi, a friend of mine is looking to replace his standard tape player in his C3 with a CD player(non citroen). Is this a DIY job? He's heard that you can just wire up a CD player as it requires an adaptor...? Is that right? And of course he'll need to get like a surrounding fascia? Oh and what kind of price would he be looking to pay for fitting if its not a DIY job? Thanks in advance. Jon