Okay, lets look at some of the most talked about specs for both cars.
Price of the 2012 GTR: $89,950
Price of ZR1: $111,100
GTR Power: 530 HP/448 TQ
ZR1 Power: 638 HP/604 TQ
GTR lbs: roughly 3820
ZR1 lbs: 3352
GTR 0-60:2.9 Sec
ZR1 0-60:3.3 Sec
GTR 1/2 Mile: Unknown (2009 Model: 11.6)
ZR1 1/2 Mile: 11.2
Over all the GTR is more impressive seeing how they managed to pull the numbers and achievements they have through technological advances and research. ffice
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The ZR1 is also damn impressive, but GM went with their usually formula of big power, balance, and grunt... for a lot more money though. >>
I'm at work so I can't gather all my thoughts right now but I think thats the basics of what I was thinking. >>