if your car is anything like mine (79 300sd) the trunk is soundproof. (except for that med box) so although it can come it. well most won't. i cut open a hole in the rear deck, sound proof the trunk. and u need to play a test cd toi find out what frequencies sound good, uhh i think it is something like a resonating frequency every car is different, or so i heard.. anyways go to sound domain.com and search for the s-classes in the member page, i think mine is 2nd from the top.. srry i am too lazy to go look up the url.