I have been offered a complete Yoshimura 4-2-1 Exhaust system for $672.31 + tax. The system is model number 1120065. It is Brand New (never installed). It has a Stainless Steel header with Stainless Steel TRS Tri-Oval Can. I have never heard this system on a Hayabusa. Is this a good price? What kind of sound should I expect? I am looking for a deep throat sound to compliment the look of the Busa. I would appreciate any and all feedback from anyone with experience in regard to this system. Thanks, Bob