To answer the original poster..I also second Fisher Customs. I have a box by them sitting in the closet and its very well built. not to thread jack, but I also have the same questions and felt like another thread was not needed. I was thinking 2.3 or 2.5 tuned to 30 hz(trying to decide between 30 or 32hz) for 1 12 LI. I'm trying to save weight and room...so I was going to use aeroports/flared ports. Questions are: has anyone tried sub up, port side OR sub front port side? I didnt want too deep of a box so I was going to go with a longer width and put the ports on the side. I havent seen too many boxes with ports on the side. This will go in a trunk car.