I recently purchased a 1998 C43, It has the orig AM/FM radio with cassette & weather band. There is a CD button on radio but no changer, also Bose speakers. My questions are. Can I replace my radio with an after market or MB unit that has an in dash cd player, if so which ones will work? if not what about a cd changer MB or aftermarket? Do they mount in the trunk? Is cable already there? Thanks in advance. Love the car!