I FINALLY got this dang pipe fitted, albeit with some slight scuffs on the underside outside edge of my swingarm. DOH.
I had to go to Autozone where I bought an 02 sensor plug/oil plug 18x1.5 for $3. I also borrowed their small size pipe expander in order to get the elbow opening wide enough and flared enough to slip onto the header. Still isn't a perfect fit but it doesn't leak and cinched up just fine. With the pics you guys provided and direction I got it oriented correctly, though the tangs for the springs holding the slipon onto the elbow don't line up, I was able to get the springs at least both on. They are fitted at an angle but work.
All in all, a pain in the butt to fit. Be prepared for lots of swear words and frustration-though I could probably fit it in an hour now that I know how to do it. But be prepared for at least that, plus the time to travel to the auto store to borrow the flaring tool.
It is a very high quality pipe, esp for $150. But you must be prepared to buy an 02 plug, use lots of elbow grease, spray lubricant and a rubber mallet to get it to fit. YOU ARE GOING TO HAVE TO TRAVEL TO AUTOZONE AND BORROW A TAILPIPE EXPANDER TOOL. You should also tape your swingarm up to keep the muffler and rearset from scuffing it up as you are pounding and moving things around. Also you will need to buy two M8x1.25 bolt, about 60-70mm long (with nuts) to fasten the hanger that comes with the pipe, to the undercarriage.
If I had to do it over again I'd buy a brand name pipe.
I will say that the sound isn't overly loud, nor soft. It has a nice rumble, this with the insert left in.