I was just curious which exhaust system would you run on the 07 450r based on experiences with them...I have decided to go with either the hmf,alba,trinity,white bro.,rossier,sparks,and dasa I want an exhuast that will give a good amount of power for the buck. Also it would be a full system and a K&N I will be getting shortly and jetting of course...But I wanted to know how they hold up,perform,and any other useful info. Thanks Brett