If anyone's interested in running up a box design for me it would be amazing. I have a DC lvl 5 18" D2. It will have a good 2500 watts on it at all times. I would like the sub face and port both firing up. It's going in a dodge nitro. It can be anywhere from 20-24" tall, 22" deep (from back to front), and 34" wide (left to right). It needs to be atleast 6cu ft. With about 90sq in. of port. If I'm missing something just let me know. Any help would be appriciated . Thank you.