It appears that that's exactly how they made it. What you end up with, though, is a pretty specific muffler. Making a wall out of these blocks will take a whi

It appears that that's exactly how they made it. What you end up with, though, is a pretty specific muffler. Making a wall out of these blocks will take a while, and it'll only block a narrow range of frequencies, somewhat. But hey, it's better than plywood because you can, like, stick your hand through it! And it's hi-tech!