i bought one 12 inch L7 and im buying another one and im buyin a kicker 1500.1zx amp with a 0 guage amp kit can someone tell me how to build a box that will make them subs about loud as they can go i no how to build sealed ones but i want ported boxes and i got a 87 s-10 blazer and i got a lot of room to work with, and is the more air space in your box make it even louder? i found a ported box on the net that is 5.51 cu ft for both chambers should i buy that or should i build my own i can carpet it and everthing but i dont know how to port them