So im trying to plan my new build. Im thinking about the Sundown Z v.3 18 inch sub to run with my Hifonics BRZ 1700.1 i only have about 6 cubic feet to work with. would that sub sound good in a ported box tuned to around 29-32 hz? Or is there a better 18 i could go with?? here are some pictures of my current build. http://s1249.photobu...%3D084ea3d2.jpg the box is 4 cubes tuned to 32 hz. i get a fair amount of windsheld flexx with it on only 600 watts(4ohm) So any suggestions would be greatly appretiated!