I think they'll differentiate the two somehow. The current Z06 is built using the hardtop model, which I think looks far more intimidating than the coupe in profile. It may be something like that but it could be as much as a wide bodykit(I've heard rumors of this). The best thing we can do is just see which rumors we hear the most and maybe give them slightly more credit than the others and wait until the new car arrives.
2005 Victory Red Chevrolet Silverado Crew Cab
2002 Concord Purple Harley Sportster 883XLC
"I think the Vietnam war is nothing more than the white people sending the black people to fight the yellow people in order to secure a nation stolen from the red people"-Anonymous
UCP's Biggest Chevrolet Corvette fan.