Che has said that he only calls it a "racing" exhaust because he knows it can be loud. I don't think he should do this, as it can turn away folks who really do think it's a racing, and therefore street illegal, exhaust.
Have
you got a sound clip for us, Randall? Yours is the original guinea pig, I'd be curious to hear it in action, be it resonance or screaming at redline.