Also, sometime around 1997, Paxton was bought out by Vortech (or so it goes) and sold all of the rights, spare parts and tooling for the VS series and the SN series superchargers to Paradise Wheels. They are the only place to get this stuff new. I buy all of the rebuild parts for the SNs , races, balls and seals, from those guys. Craig is kinda hard to get on the phone sometimes. He sells on ebay under the name mrpaxtonman.
And NO, I'm not affiliated with them at all....

Just a customer, but I chased leads when I was trying to find parts for a "antiquated" SN93 blower .....
KEV