Of course it will, look at how well the C5 Z06 has sold, and how well the current Z06 is selling... That still doesn't change the fact it will utterly fail elsewhere in the world, where GM doesn't want it to. Hell they could stick a Chevrolet badge on a 599 GTB and it still wouldn't sell in Europe, simply because of the lack of pedigree of said badge... Porsche's got multiple Le Mans wins to their credit, Ferrari's got F1 championships (including 5 straight cheapskate cheater ones but that's another story) and sports cars history... GM's is... "uhh, the winningest left turning for nearly 3 hours boring race brand in history, oh wait no we've got 5 GTS/GT1 titles at Le Mans but that doesn't matter right?"
They can come up with anything they want, a Corvette just won't outsell a Ferrari or Porsche outside North America, ever... and it's a shame.