I don't know about the smittys, but if you look into the inlet of a standard glasspack, the "louvers" face backwards toward the outlet. I have read that turning a glasspack around will make it produce more of a "bark" sound when revved. I'll double check mine and get back here.

chip


Preaching the Hot Rod Gospel according to the 4-stroke apostles:

Suck, Squish, Fire and Fumes