I am designing a box to house my 4 Fosgate 8" subs to go into the back of my dakota. I am going to have 4 in a row, should I have each one in a different chamber, or one large box? Also is there any benefit to building the rectangular ports into the box besides using round tube ports? Should I have the subs pointing towards the front seat or firing up? This is the first box I have ever built, and have no clue as to what to do to it. I can cut a board and build some stuff though. Any ideas please feel free to share.