thanks man, but how about if i use a single 6" aero, not sure if i can clear the 15.5" thats why i was going to do sub up and port out the side.. I figured i could conserve a bit of space i was using Torres box calc and came up with this 14"H x 18"D x 34"L with a single 6"aero at 26"L would put me at 27.10htz..