I have a Corsa on my 99 Z28 right now.. If the 5th Gen Corsa setup is anything like my current, thats what I am getting..
My Current exhaust consists of Long tubes, Catted Y-pipe, and a corsa Catback..
when cruising you cant hear the exhaust 45-70MPH, you hear the tires on the pavement, but when you get on it it gets loud.