//content.invisioncic.com/y282845/emoticons/up2something.gif.dd110ecf3ae4b76050d87598f2f8de7c.gifsubs up/port back would work the best, but obviously don't have the room.....that box is probably the best you're going to get keeping it all in the back like that
Just run with what you have or sacrifice the back seat for a different box