its gonna be a slot port in a extended cab 93 pos chevy and its gonna be a console box out of 5/8 mdf with a 1700 cea hifonics brz would it be ok to build a 4 cubed box at 32 hz with just 1 12 inch sub dimensions of the box are 42in wide X 16in high X 13.25in deep and with a 3 inch port width and height of 8 inches and port length of 11.4 i should get 32 hz if my math is correct.... by the way this is going to be a t line box, and if i decided to upgrade could i just put the second sub at the end of the chamber right before it ports?