History says, if a market exists, companies generally find some creative way to fulfill that market. For example;
http://www.mopar.com/performance/package/index.html
Granted, you have to meet a few guidelines;
http://www.mopar.com/pdf/ordering_guidelines.pdf
Maybe I'm being naive, but if Chrysler can market a politically incorrect car that shoves cafe rules where the sun don't shine, I would think Chevy could market a Z28 performance package...that just happens to go fast around corners too.