[BR3W CITY]

I have an 02 extreme, but the deck dimensions are close enough for comparison. We ran 2 Kicker 15's in MASSIVE ported boxes, taking up 95% of the back but putting up pretty huge DB numbers. It ran of a factory-freak Zapco 1kwatt class D monoblock, but we were convinced it put out well above 1k. The setup was switched by a different owner for four RE audio 12's.

Truthfully, I would build 4 seperate boxes setup for the correct volume (and ported or slotted as desired). Then build a facia for them. This makes it much easier to service, access and design from a volumetric standpoint. I've done and seen this done well when combined with fiberglassing for show boxes.