If you do not have DSP there should be 2 small mids in the top of the dash near the windshield, 2 tweeters on the front door sills, 2 mids in the front doors, 2 bass in the front doors, 2 mids in the rear doors and 2 bass in the rear doors. If you have DSP add an amp (in the driver side rear trunk comp.)and a woofer enclosure (in the passenger side rear trunk comp.)...sheesh I think that covers 'em all.