kicker comps are only about 80 bucks at pep boys. my set up is 2 12" kicker l7's, precision power amp 850 watt true power, 4 gauge power wire (ground matches of course) 12 gauge speaker wire for the subs inside and out of the box. something that no one else brought up (or maybe they did and i didnt see it) is your gonna need an aftermarket stereo with sub out puts to hook up the rca cables. so if you dont already have one there is another 100 atleast