Well, its on and it sounds pretty cool. I jerry-rigged a bracket for the time being. (Next weekend I will try turning it at the collecter joint, like you suggest, and see if that won't get it to mout up on the foot peg.) I put on all the rings that it came with, seven I think, and its not obnoxiously loud at all.
I haven't done any carb adjustments yet so I am sure I am not reaping the full benefit of this little beauty. Speaking of which, its not big and ugly at all. Actually, it looks rather sharp if i do say so myself. Its a tad bit shorter and not quite as fat and is burshed metal instead of shiny crome, which i am diggin'. After i adjust the carbs I'll let you know how it performs.
I got it off ebay by the way.
The Big B