Dimensions for subwoofer box

I'm wanting to install a system in my double cab, but really am wanting to save as much moolah as possible. Times are hard with a new truck note...haha. But anyways, if anybody has had a sub box made to fit behind the rear seats, could I maybe get the dimensions for it? I'd much rather build the box myself than buy one. Thanks guys

 

for what subs? Sealed/ported? How much cubic feet do you need? what size subs, how many do you want? etc.

 

Sealed box. Fit for one 10" sub. On the drivers side, the 40% section behind the rear seat.

 

dude you can't get any sweeter then this:
http://www.abt.com/product/43448/JL...aign=froogle&gclid=COTQr7CKuq0CFUIDQAodvHhp_A



search: but around $700

 

Not interested in dropping $700 on something that i can acquire all the components for and do myself for $300 or so, lol