I have a 3/4" long reach hole saw here I can send you, but doing the job 3/4s at a time takes more time & effort than Poppy's method. If I were to do it again, I'd do what Poppy posted. If you can't find a suitable length of rebar, some cold rolled round stock from the hardware store should be affordable.
Maybe take two baffles out at first, then ride it around for a while and see if that sound works for you. Two out does take it up quite a bit compared to stock, but it isn't "Here come the neighbors with torches and pitch forks" loud.
I took a long ride in November, and went back to a pair of stock pipes for the quiet they offer. I recently put my louder pipes back on, and I'm kind of missing those factory quiet pipes.
If I had it to do over again part II: I'd chop saw the ends off the factory pipes at an angle, so when you look at the bike from the side, it would look like \___________
I'd even leave a few inches worth of the pipe's factory taper on top, (if it's pre '06) and cut it steeper than 45, but thats just me. Just a thought. You can always cut more or pipe or square it to 90 degrees etc. later on if an angle doesn't look the way you want it.
