I need my 2002 430clk to look good inside and out. Anyone ever change the head unit and speakers and completely rewire a new system? I am thinking of just letting the fibre optic and integrated phone go including the steering controls. Can I do this and still have the car function without error codes? I want to add a monitor screen, cd player, dvd player in the glove box, eq, 2 amps all new speakers and custom sub box, also maybe some headrest monitors!! any suggestions?