Guess we know for sure now that not only does the new 2009 Chevy Corvette ZR1 have a polycarbonate hole in the hood, we also know for sure exactly how big it is well in advance of the debut at the Detroit Auto Show. We also know it'll show off — umm — gray plastic? Umm — right. Anyway, thank you very much random tipster guy who e-mailed us this shot we're assuming was taken at Monterey last weekend. Thank you very much. Higher-resolution shot here.