I'm building a little system for a friend in an 03 F-150 supercrew, he want's to keep all his passenger space, and he is too much of a puss for a blowthrough. Does anyone have any ideas for me on how to fit some decent base in the thing. Also, supercrewsound.com sells a sealed box for under the seat that holds 2 10's, can that possibly sound good? two subs sealed together in 1cf, sounds crazy to me. thanks for the help