Wondering if anyone could help me with my 604-8gs. I'm trying to design a cab for them. They need room to breathe rather than the 3.5 cf cab that they are in at the moment. Any help would be great. I'm looking for something creative and different. Somewhat toying around with throwing another 15 into the equation. Just looking for some ideas so if anyone could help and provide pics of their cabs i'd be interested! Thank you