In August 2008, HSV launched its new flagship model, the W427. This car is based on the GTS, but carries a 7.0 L LS7 V8 engine along with larger brakes, strengthened gearbox, revised suspension and unique MRC settings. The W427 was the most powerful car ever made in Australia until the release of the Gen-F GTS, with power outputs of at 7000 rpm and at 5000 rpm. It is still the most expensive, at $155 500.
