Had a KTM 525sx die on me. Carb is new Generation III FCR 41mm that was just massaged by KTM engine guru. I am thinking about putting it on an XR650R. Saw a Sudco Kit for $750? but can't figure out what would be in that kit to make it cost so much. I haven't calipered the air boots, but they look close enough to make it work. Yes on the rejet. Just wondering if there is anything else that would keep it from working as a bolt-on?