Kenne Bell has already released hp figures and some other Tech on the new twin screw.
"The Blowzilla 2200 supercharger is rated for 8-20 psi (depending on pulley).....The kit is slated for release in Feb. or March of 2003 and will come with the Flowzilla inlet pipe, a KB Switch Chip and hf pump.......
The blower is a direct replacement and will reduce air charge temp by up to %30. The Blowzilla has %30 less drag compared to the stock Eaton unit and, at 13 psi of boost, it will make over 100 hp more on a factory motor."
That's like 500 hp dudes.

Here is what the competition will be saying.
