This is from Fox Acoustics
THIS ENCLOSURE FITS DODGE QUAD CAB AND CREW CAB TRUCKS FROM 2002-2009
IT DOES NOT FIT THE MEGA CAB..
FOLD FLAT STORAGE DECKS MUST BE REMOVED.
INTERNAL AIR VOLUME: 1.3 CUBIC FEET
TUNE FREQUENCY: N/A
SUB SIZE: 12"
HOLE SIZE: 11.125"
MOUNTING DEPTH: 7.75" W/ 6 INCH DIAMETER MAGNET
5/8" SEAT SPACER KIT AND INSTALLATION INSTRUCTIONS ARE INCLUDED.
It goes for $140 USD and as Stuart mentioned, they are behind on production so it's not available right now. That's the sale price he had it at in November. (list was $180). This box has the most air space I have seen @ 1.3 cubic feet. others on the net are .69 cubic feet.
This is what I will be installing in the spring with a JL 12W6
And what good is a post without pics??