i don't think it's his bike ...P.S. Is your rear fender the rear cowling?
i cropped a photo for you of mine when i shortened my oem pipes .. this is what was inside ...I've following this thread with some interest, and I remember years ago seeing a picture where someone had cut open the original mufflers to show the layout of the standard baffles although after several Internet searches I cannot locate it, anyone remember this at all.