Well, im even more addicted. I want to make another box but have be ported it sitting out. When i have 4 friends in the car, i can take the box out and put the sealed one under the seat. I would try a under the seat ported design but that seem to hard. So, dangers of a 75lbs weight in the back seat of a truck sitting on the floor ( not the seat). Am i gonna kill someone in small wreck ( assuming i ever have one). What would yall say? I want to make my Sa-8's even louder.