The Holden HSV GTS Is The 575 Horsepower Chevrolet SS We Need To HaveTravis Okulski4/25/13 12:39pmFiled to: Holden HSV GTSChevrolet SS1393EditPromoteShare to KinjaToggle Conversation toolsGo to permalinkSometimes the Aussies get it right. Other times the Aussies get it really right. This is the Holden HSV GTS. It's a 2014 Chevy SS with the 575 horsepower supercharged V8 from the Camaro ZL1. That makes this Australia's most powerful car. Of course, it isn't coming to America. Damn.