i would show u mine but sold it. basically i had 2 12's mounted in my trunk with a sheet of plexiglass holding it. using the trunk like a huge sub box ported the bass back into the cabin instead of adding sound damping foam. so i was able to keep a clean bass hit without rattling the whole damn car.. its hard to explain but not as pricy as u think. any real sound shop can do it for a little more than what u would pay for a really good sub box