the fast german auto sys IS an S&S system.  When I went down there and they
pulled it off the shelf, I said no thanks and bought directly from S&S.  the
S&S system is pretty loud really, no noticeable increase in power though.
But then again, I have a pretty heavy foot.  The sound is a deep rumble- not
the high pitch of air cooled motors with a header.  All in all, I like it but
was perhaps expecting a bit more.  Oh, by the way, if you want to keep the
paint on it, get it powder coated or something -- paint starts coming off
immediately upon start up.