Going supercharger for a track car is a mistake IMO. I track a lot and have no problems passing S/C M3's on the straights with my N/A M3. Superchargers (and all the hardware associated with it) get way too hot. The heat soak from WOT really bogs down your power and taxes fluids & ultimately longevity of the motor. They design these kits to work fine for the street, but not nearly enough cooling for constant track-thrashing.
My YouTube video
-- RANDY SPARRE --