Do you want SQ or SPL? That is sound quality or sound pressure level. If you want your mirrors to shake, and quarters to flip on your roof, go with 3 10" Kicker Solobaric L7's in sealed enclosures. If you want a nice sound quality, basically a sub that will add to the music instead of become the music, go with a JL W3v2 or a Alpine Type R. The W6v2 in a ported would be a little much i think, and due to the price, if you wanted to go JL, just get a single W7 and be very happy.