I'll be picking up my wrx 5-door next week, and stereo is one of the first things to be changed. I want to avoid losing as much hatch space as possible since folding the seats will be out of the question for another year or so (child seats), and I need the room for my hockey goalie gear. I'll be getting the audio integrations enclosure, but where else can I mount an amp? Is under the passenger front seat possible? iirc that is where the subaru powered sub goes correct? Any other suggestions?