Micheal, I think you will find that the HKS unit will be very limited in it's future power increase capability when compared to the bigger centrifugal superchargers (Vortech and ATI) as the rotrex/HKS unit has very limited mass air flow increase potential.
From what I have seen on the rotrex S/C previously (have used them on holden and Ford V8 engines) I think you will find that the HKS S/C will have superior low rpm power though from there on in the bigger centrifugal superchargers will produce the best power in the mid to high rpm.
Would be very interesting to see the torque and power curves of all of the popular S/C systems on the identical fuel octane and tested on the same day and dyno. :thumbsup:
Peter
APS