has anyone done this, i have the nav radio with infinity speakers. are there any pre amp outputs on the back of the nav radio? i have seen under seat boxes but then i will loose the ability to fold down my seats. i am looking for 2 10" or 12" subs. big cab needs some big speakers.

 

i think JL has a setup for that... i think they can install behind the back seats on those cabs.. not too sure...

 

behind the seat seems like my only option, has anyone done them under the front seats? what subs would everyone reccomend?