Fixed. Not quite a straight up G8 though, the HSVs get adjustable suspensions, poly bushings, that Walkinshaw blower, 6 piston front brakes clamping 14" rotors. All kinds of nice stuff you can't get on a factory G8. Doesn't mean you can't mod the shit out of it to match though. If I owned a white G8, it would be getting that offset stripe, wing, and Holden front/rear fascias immediately.