i changed the port, its 24" X 2" X 7" long. i still have 7.55 cubic feet. what do you guys think? better?? worse??

(4) 15" car subwoofer box design?? help? comments??-2_15s_one.jpg(4) 15" car subwoofer box design?? help? comments??-2_15s_three.jpg(4) 15" car subwoofer box design?? help? comments??-2_15s_two.jpg