dirty

hey guys i just bought my dads 2000 chevy silverado ext cab truck......im gonna be running the amp that i took out of my old truck which was the Rockford Fosgate T10001bd, now im looking for sub(s) and its imperative that they fit under the rear seat as now i have a child so the back seat must stay down at all times with the box underneath.....any suggestions?.............i think that mtx has thunder form prefab boxes for certain trucks but are they any good?...........theres not much room under the rear seats thought, so am i stuck with 8's or maybe the shallow mount subs but i heard that the shallow mounts dont pack as much punch. im located in calgary if that helps.

cheers

Ryan