So I just bought one of these puppies.... and just removed the Riocar MK2a, amps, speakers and all that out of my POS Audi A4... Being that the Type S comes standard with a Bose CD changer and premium sound, has anyone installed an empeg into one of these things while keeping the factory stereo intact? (I didn't really want the bose crap, but they really gave me no option being that it's frickin standard so it seems kind of a waste to go pulling all that out)