I have a 2002 mustang I want to have a ported box with the dims 35"w x 11"h x 24"L. I want to have 2 sa 10s I will be using a 1700 hifonics. Can someone design a box for me? I want the best SPL possible since the trunk is so small. The reason the box is so small is I want to be able to slide the box in from the backseats.