Not expecting anyone to know this, but thought I'd fire off a shot in the dark: I ordered an old copy of Terrafirma III from amazon, I used to watch it all the time as a kid, well, 16 year old kid! Anyway, since being a 16 year old kid I have made the best purchase of my life thus far, a 1993 XR600R, it is THE love of my life! The very first segment in that video is of Johnny Campbell haulin' a$$ through the desert on a 600 like mine. Point is, I just happen to notice at one point, his XR has dual exhaust??? When/where/how is this available???? Could this be something available for purchase, or more than likely, a custom, one off part that only someone like Johnny Campbell would be privvy to??? Anybody with anything would be awesome. GO!