Its a Whipple 510R. The 510's are very nice efficient super charger. I am only spinning it 6 percent over and see 14 psi flat across the rpm band. It flows 3200cfm at 12000rpm . So 1500 hp is very doable. Car ran 9.0 at 3600lbs with a 3.5 gear last year. Mostly was a street car. Putting the 4.10 gear back in now. More fun to just race it at the track then play on the street.