Well its decision time and im on the fence BIG time about what exhaust system to buy. Its between the Hamaguchi and the Arata. Both offer big time weight savings and and peformance gains. This is primarily a street bike but i am going to see the track a dozen or so times this year. I put the order in for the Arata because they are still unavailable at this time ...The Hamaguchi is available and a few hundred cheaper.....Help ?? Opinions??? Thanks!