Maybe the guys that prefer screw type s/c can get Kenne Bell to develop a kit for the Viper that incorporates the Blowzilla unit. Then you would have something to brag about out of the box. Unfortunately it would be expensive because it would also have to include a new hood for the car since the screw type s/c doesn't even fit properly under a stock hood
Now you've lost me. The Roe s/c is a twin-screw Autorotor--the same type of blower KB uses--which was chosen specifically for the Viper with the involvement of Autorotor. Only the Roe is a 2.4 liter Autorotor, while the Blowzilla is a 2.2 liter. So unless you're saying KB's version of the Autorotor has some super secret proprietary unobtanium in it, a Blowzilla would likely produce less power than the unit Roe is using (which btw does fit under the stock hood--barely).