The standard baffles for the SE are a cartridge type baffle, there's nothing to repack, and they aren't straight through. I believe that you can get a Kerker baffle from Supertrapp that fits the muffler bidy that is straight through, and louder.
They were the old 65115-98b mufflers, and I gather that the Moco is making them again for the '10 model year bikes with the cat in the headpipe.