Interesting that the street car has more HP than the GT3 RSR....thought not surprising since the race car is forced to run "intake restrictors" per class rules.
Yeah, I think without restrictors the motor is good for ~600hp. The street version likely loses ~100hp by using a more mild cam, lower redline, more restrictive exhaust, lower octane fuel (compression is lower?), and I doubt the street car keeps the RSR's 6 Individual Throttle Bodies (but it would be awesome if it did).
73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs). Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550 Maranello