Holden Special Vehicles (HSV) has unveiled what will be its final-ever range with the main drawcard being the LS9-powered GTSR W1 – the most powerful and most expensive HSV model, ever. With eight models in total making up the 2017 HSV line-up, prices are up between $2000 and $3000 for refreshed and re-badged supercharged GEN-F2 vehicles, while three new high-performance GTSR models have been created to ensure the Zeta platform most definitely goes out with a bang.