Yeah, I knew about the Porsche and Vette engines being moved around for racing. I'm just talking strictly street cars, like the ACR/ZR1/GT2. I'm not sure if they moved the GT2 engine much, never looked into the details.
Good point on the aero, that makes all the difference in the world. It'll be interesting to see what it does, that's for sure. That...and the price.
I guess a good comparison would be the McLaren 720 and Huracan Performante. Both are incredibly fast in the corners and do it without significant aero added. The Huracan has a spoiler, but nothing like the ZR1, ACR, or GT2. The 720S also has much smaller tires.