i have a single cab f-150 and took measurements for a box for two 12s and came out with this 56"w x 26"h x 6.5"top depth x 11" bottom depth with two ports tuned to 34 hertz dem. 3"h x 4"w x 7.25"d but im puttin the port on top of the box so that it will flow up and roll in the truck instead of slamming into the back of the seats, but the subs will be normal facing the seats. tell me what you think of this box and if i should change anything.