I have a 2004 tacoma ext cab with a single ssa dcon 12 svc 4 0hm and a Boston acoustics gt-2125 bridged to give the dcon 400w rms at 4ohms. I have a sealed box with 1.25 cuft of airspace it's a prefab ground shaker here I can use, it's new and came as a gift, my question is how would it sound sealed with 400w rms in a sealed enclosure?? All this stuff is new, and I just don't have 200 for a custom tune box right now and I really want to have something in my truck would it be good to use this sealed box or get a tuned and ported box.