Ya I went with a 3 inch ID open rapped baffle just at the end of the can so it does not restrict it to much. She has a special roar when you open her up yet a quieter rumble at idle. It is actually just the front of the baffle made for the 4.5 inch megaphone.
I had forgotten that I had seen your baffle in the thread earlier. Where did you order it from? Also to reiterate the noise that the intake makes I recall a very long time ago reading an article on one of the first Kawasaki Z1's where the editor describes the intake noise as an attempt by the bike "To Suck the bark off the trees as it went down the road.
If my bike was stock I would not hesitate to try the whole baffle if I felt it needed to be a little quieter, but I like what I have and the cops can look and see a baffle real easy. Of course they do not have to bend over or is it so visible the smart fellers do not have to strain themselves to see there is a baffle
Oh and it attaches to the end cap for the can