LOL you still haven't gotten the exhaust you wanted eh. Maybe you shoulda bought mine, yes? I'm still rockin' those bad boys - if they don't sell, it's whoever's loss not mine.
I wrote up a tutorial on how to perform this modification. You should take some time and read it. A hacksaw won't get you where you want to go. You need a Dremel tool with a flexible shaft attachment and a shitload of cutoff wheels. You'll need other stuff too, check out my post.
Final finish depends upon the finesse of the craftsman. I achieved a high degree of craft with mine and they look and sound superb but I do realize that not everyone has the same skillz. My recommendation is to be very careful drilling out those rivets. Then be very careful with the rest of the core job.
Alternatively, you could just enjoy what you have. Unless you have a midpipe, airbox, and DP ECU you ain't gonna realize any performance benefits with a full core anyway. As long as you got sound you got most of what you need. Don't obsess over your bike too much.
Funny how that guy said it was a full core job when it wasn't.
