I'm lucky my Gen2 Muzzy came with a centre stand stop but the Aluminum can getting a little grim. Still repacks fine though and does the job. Since my bike is 2005 I'd probably get one of these as a replacement as I'm not going to spend $350 on a new Yoshimura for a 7 year old bike. As long as the mid-pipe is clear from the stock honeycomb bullshit I'm sure a stage 1 or stage 2 will work fine with this pipe. It looks free flowing enough to do the job and it's stainless steel which to be honest is better than my Aluminum can that my Muzzy has. My Muzzy has only a stainless steel mid-pipe. I'd give it a go. If you need to fabricate a centre stand stop you can do it out of sheet metal, thick rubber etc. It's nothing fancy trust me it's just a little oval piece of thick sheet metal that came with my Muzzy to screw on to the existing centre stand bolt made out of thick sheet metal and has lasted 7 years with no problems. To be honest all aftermarket pipes all do the same shit they just have different finishes or baffling, sound level etc. Really a slip on should only have to do 3 things:
1. Un-restrict the crap stock mid-pipe
2. Provide sound baffling on the end to not wake the neighbors.
3. Be repackable either by screws or pop rivets that can be drilled and re-popped.
Whether it's a triangle, round, square, a paralellegram, octogon, etc. doesn't matter. If I was going with these pipes I would get the triangular not because of the look but you can pack more sound dampening material in there to quiet it down and have less packing service times. To be honest I don't care about the painted finish, I care what it is made out of and the end can is stainless steel not aluminum so it already beats my Muzzy. Don't get me wrong my Muzzy has given me great service and has lasted for 7 years so I can't complain but the satin Aluminum finish is starting to die and the pop rivet holes are ovaling as I've repacked it a bunch of times and the can is soft Aluminum. Can still works though. For fun because it's only $100 I may buy one and try it to see. What the hell if it works great saves me money on either buying another Muzzy or other "real" slip on and if it doesn't I can go back to my Muzzy. To be honest, the Muzzy I got was the cheapest they had and was only another $50 over this one.
The thing I like about these ones is there are no crazy doodads all over the pipe I'm not a 16 year old kid, the less schtick the better. Put it this way if it comes without a huge deep 6 inch scratch in the top of the can it will already be better than the Muzzy.(wasn't worth shipping it back)