OK, the key to cutting the pipe was less the blade and more the cutting fluid. Once I started using cutting fluid it went through like butter.
So any way, the Yoshi is off and I'm probably going to sell it, either on here or eBay. And, the LeoVince is on the bike. Haven't had a chance to start it yet because I don't want to wake up my neighbors, so starting it will have to wait till morning. In my opinion it looks so much better than the Yoshi. I like the aluminum better than the stainless steel finish on the Yoshi and it probably weighs half what the Yoshi did. Plus, I used to have dual LeoVince's on one of my old Monsters, so I'm kinda partial.
Anyway, here are some photos -- first the new pipe, and then the old one, and finally the Yoshi ready for sale.