Yes the 05 gets Dual Exiting exhaust and 2 minor hood scoops (not ramair) just cold air to the engine. Also true the Holden (GTO) will only be built for 3 years (2 more) the the new Zetta platform will be out and you can expect the new Camero, Chevelle, GTO a few other RWD V8 to be built on that platform. But that is the plan now...I guess it could all change over the next few years though.