if anyone else wants one of these custom under the back seat boxes, they can be found on ebay, a guy makes them and will ship as well. i bought one for mine then i put a shallow mount 1000watt speaker in it. pushing with a 2 channel kenwood kac7203, 1000watt amp sounds nice. box fits very well under passenger side rear seat. very clean bass!! the trick i found was to use the boosted signal off the built in sub woofer behind the rear seat to push the amp. so instead of pushing the little sub they put in, you get a free signal boost of the small amp. i have the pioneer 6disc cd pioneer system from factory. i would suggest an farad capaciter so as not to put a strain on the alternater. url below: mike