I was going to replace the Becker Cassette/radio with an aftermarket CD/radio. Pulled the unit out of the dash and that is as far as I got. Thinking about other posts, I am guessing that the assembly in the dash is called the head, the tuner and amp are located somewhere else. Is there an easy way to install the aftermarket CD/Radio or do I need to run new speaker and antenna wires. Is there a reasonably priced CD/Radio that will plug into the existing set up or can I add a cd player to the existing radio/cassette. I want a single disk unit, and would rather not have it in the trunk. Thanks for the help and advice.