ive got an f-150 reg cab i built this box(big pain in the a$$) to fit behind my seat with it almost as far back as the seat can go and had to pull out two plastic side pieces 1 on either side anyways it fits great but my parents for my 18th birthday are gettin me a Lincoln LS i wanna find out how much i can sell it for or waht i can ask for its 3/4 mdf each chamber probably has about .75 ft its also a sealed enclosure