This is the box I plan to purchase on eBay:
12-Inch CUSTOM-PORTED MDF CAR STEREO SUB WOOFER ENCLOSURE 2 CU. FT. TUNED @ 32Hz | eBay
Im leaning towards a GCON sub instead.. Ideally want an enclosure thats 2.8 cu.ft tuned @ 30 hz , if I can find a box builder local that can build a similar...