Another PSI Billet C Screw Blower... - PSISuperchargers | Facebook
First Look - New Billet PSI | Yellow Bullet Forums
David DeMarco Returns to Racing with Screw-Blown, 1969 Camar
David DeMarco Returns to Racing with Screw-Blown, 1969 Camar
Perry Dunn Racing - FOR SALE.....FOR SALE!!! PSI "C" ROTOR SCREW BLOWER Comes complete with everything you need to bolt and go! Comes with Hat, Barrel valve, 4 different pulleys, intake, all
Blower Talk: Roots And Screw Superchargers In Drag Racing