I need to build my sub box to fit in the back of my trunk. The specs say 1.7 cubic feet is ideal. I just need somebody to figure a box design using inches with it not exceeding 17' inches wide, 14' long and 13' high. So basically width is all there is to change. How wide should each box be? This is for 2 twelves, 1 box each then Im going to attach the boxes together. Kinda Like Dodgeyaussie's was If you remember how he did it except my subs are going to fire into the cab.