Thought you might like that. :) I kept saying it could be done, but I figured I should prove it to everyone. :)
In reality, when I wimped out and took it to a muffler shop to have it done, it only cost me $54 to have them do it, including the "fabricating" for the hanger. They did exactly what I'd suggested, and ground off the tab on her old pipe, flattened it, and drilled a hole for the Yosh hanger. Total price was well under what replacing with stock would have been.
When they took Dita's original pipe off they mentioned 2 things.
1. It had been patched twice already, and that it was "done". No more life in that pipe.
2. If the drain hole had been drilled at the base of the pipe (where it meets the mid-pipe) rather than at the end of the pipe, that it wouldn't have rusted as badly.