you need an amp separate from the headunit to run any good subwoofer. simplest way would be to get an amp with speaker level inputs that way you can tap into one of the speakers and hook up your subwoofer that way. a 10" sub will never have the same rumble it's 12" counterpart will have. and i don't think you'll be able to put a W6, and definitely not the W7, in the side compartment without a custom built enclosure. i wouldn't put a 10" in the side compartment and one in the spare tire well as you might get some cancellation of the soundwaves since your bass will be coming from 2 different locations. personally, for hip hop/rap, i prefer 15" woofers as they definitely will shake rattle and roll your car, but they take up a lot of room.