Hey yall just wondering if anyone has built their own box for under the seat of their truck. I was thinking about building my own box for some shallow mount subs (2 12"s) under the back seat of my 97 F150 extended cab. Im hopin to do shallow mounts and not have to do any kind of seat lift. If anyone has done this id love to hear about it or if anyone can give me some tips on the construction of the box, thanks guys.