Nice race....
I would assume it would probably be supercharged, mainly because I know all the turbo s2k's in the area. The supercharger on the s2k is good, but is linear. Add that with the low torque, and the powerband pretty much stays stock untill boost hits, which on supercharged cars is 6k. I always wanted to race an M coupe, as I was beat pretty bad by one when I was stock....
Nick