I love the subs in my car and can't live without loud bass and all but my sub box is just beginning to annoy me. Its 3 cubic feet so its huge and probable weighs 100+ lbs with the 2 12's in it. The weight makes a noticable difference when driving. I was thinking about going to one 12 in a ported box or somehting instead but its not really loud enough so i began thinking about fiberglass boxes. How much do you think it would cost to get a fiberglass box built and how much lighter would it be? sorry for the long post. thanks.