well in that car your seats fold down and in the dimensions u listed u will be able to fit 3 10's wide facing forward u can put subs at the top and ports below the subs or the opposite and it will work well I can tell u for a fact tho..dont exceed 14" or u will have a biatch of a time fitting that box into the area below the rear deck ... also most 6x9's dont even sound that good in the factory location because the airspace is soo damn small and if u use one with a large magnet structure it wont even physically fit in there.

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finally got a new windshield...lets see what happens on the weekend

TEAM MAX-TECH

2005 - 161.2 dB CERTIFIED - 2-RE MT12's on 4 American Bass 200.1

2007 - STREET C - 15" RE MT in a 1995 NEON!
154.2dB 4 AmericanBass 500.1's with way too much voltage drop

2008 - Street C - 15" FI BTL in a 1999 VW Jetta TRUNK!
149.0 on 1 - Powerbass XA3000d
not a bad start for a raw box