Oh, i need some help on building a sub box. I ordered my sub in a custom box, but I've heard that its a ton better for the sub if you build one on your own, so it can be insanely tuned for the sub or something. Also, I want to set my sub facing the trunk-thru in my back seat, cuz i plan on having that open for my sub. I'm not sure if the box that it is coming in will be small enough......its a 12" sub, and the trunk is 17" tall....