Looks like Chevy rebadged the Monero and put a different front facia on it. In other words, same thing as the GTO and Pontiac. Is it a 2004? If it's 2005 then it demonstrates GM's trend of keeping the LS2 to North America at least for its first year.
It's just a Holden Monaro with Chevy emblems stuck on it. I guess GM thinks no one will notice the round spot on the grill where the Holden emblem goes. Geez, they could of at least made a new grill for it.