how do you go about getting a custom box built to spec for certian subs? the box that i have i bought from best buy, so im sure that its not the right size for the subs i have now or the ones that i may get in the future. how much power to those stryke av 12's handle? a friend of mine bought a volfenhag sub or something like that. has anyone heard anything about these? they are pretty inexpensive, but when it comes to sound i think you get what you pay for? thanks for all the help its been very helpful.