this is it, the guy that built it got plans from the stereo shop in town it is 9 cubic feet with a 6 inch port about 3 inches around.
its huge almost 3 feet each way, im wondering if the box is the wrong shape could it be built better
here is picture of the amp he is using but these ;pics are the amp on the other sub he built with a 15 inch kicker vr series
i know its not enough amp so what would be
the amp fits on both subs