JL 10W6v2's... supposed to be 0.66cuft each, so 2cuft total... I'm guessing the box is a bit under 2, maybe 1.9 or even 1.8 w/ all the bracing and what not. But that's why God invented polyfill.

 

It would be easier to fit 3 10's if you have a quadcab (it was real tight getting all three in there on a supercab). One thing I am considering doing is replacing the 70 portion of the 30/70 rear with another 30 section leaving a gap for the center console to extend all the way back to the back seat cushion. If you did this, you could possibly fit 4 12's.... it may still be tight though. Definitely 3 12's.