thats what i was thinking about doing but only one Q ? say my box is (H20xW18xD30)2 6" ports 24" long - 15" of them are out the side of the box facing the driver side that would be 4.52cu.ft 12.50 port area per foot 33.39 htz tuneing ... only 500wrms that why im thinking 4.52 cubes dose that sound like it will be bumpin hard ?