you could get a new head unit Vet posted a nice sony. and get a lil 8 in a small box for fuller base and smaller subs have better base response for faster bass like rock and techno(which im sure is your favorite). But you could mount amp right to the box to keep it all tight and consolidated.

thread with the head unit http://www.grandprixforums.net/threa...-Be-Disappoint

that deck could prolly run doors and package tray speakers with careless ease

Good luck