Cooper website [link]http://cooperpipes.com/products/products/[/link]
Mike Tyson doesn't have a website, but you can find his mufflers at the Redline Motor($39.95) or Maston Marine($37.50) website, I think. I managed to lose his email and number somehow. If you can get Mike's email, the price will be a little cheaper. His carbon fiber mufflers look swwwwwwwwwwwwwweeeeeeeeeeeeeeeeet.
For the VooDoo version of the Jeronetune pipe, you can email Greg at VooDoo props. He's offering them over at the pros/racers website(PM me if you want the name). Last I heard, he has 18 or so left in stock. These are very quiet.