I've got a deal going on a 2009 950 se Erzb edition. Yea baby ya. Can't wait for sprng. Anyway I'm curious if anyone knows what's lurking inside the stock black Akro exhaust system. Is there a restrictor, quiet core option or a cat of some design? Is there a k own spark arrestor available for them? I hear CJ Designs had one at one time but not sure if they do anymore.