Honestly, the only reason the ZR1 is faster is that Ford too seriously hobbled the GT500 from the factory. The "electronic powertrain feature" (clutch protection) and PCM parameters that prevent the car from making full power with coolant temps under 170* hurt the car. IMO, with these features disabled they would be ~10.9-11.0 cars in the 129-130 mph range.Zr1 is out of their league stock, 2013 are a better race for Z06s stock for stock
http://www.svtperformance.com/forum...55141-ran-09-z06-roll-you-guys-might-mad.html
S.