I want to do something similar for my 2000 C43. I am looking to replace the head unit of my Bose upgrade system with a new one with a CD slot rather than adding a CD changer in the trunk. Can I get the Blaupunkt Toronto also for an easy installation and just lose the connection to the factory phone and CD changer? In addition, is the size comparable to my factory unit so that I don't have to get custom work?