i think you mean that it will have the port on the side of the box instead of the back of box. im looking to have the port at the rear and the length of the box. so another words if i where to say 43x17x15 and i would have sub facing forward and then at the top of the back of the box there would be a lets just say 1in port that was 41 in long and the back and top of the box. can i do this with those dimensions beaing at 4cbft and tuned under 35hz. if not what would you suggest.