There aren't that many Ferraris sold in the US each year anyway new. Chevy could nab every one of them and it would be a small percentage, and they won't nab more than a few at best. The sell about 2,500 a year in the US. Porsche sells under 10,000 911s a year, a nifty market with their markups and options pricing.
Corvette sells about 20,000, more than that when the C7 was newer (34,000 in 2014).
Might they nab some 911 buyers? Might get more Cayman buyers, and some high end Mustang buyers.
That's if the car is really well sorted out and the interior is nicely done, the little things.