Four-Door Supercharged Corvette: Holden HSV GTSR W1 🏁🇦🇺 Before Australian rear-wheel-drive manufacturing closed its doors forever, Holden Special Vehicles (HSV) built the ultimate farewell gift: the 2017 GTSR W1. Rather than using a standard engine, HSV took the four-door Commodore chassis and stuffed the supercharged C6 Corvette ZR1’s heart directly under the hood. The result was Australia’s most powerful production car ever built—a hand-built, track-honed sedan that is literally a four-door supercharged Corvette. Under that vented carbon-fiber hood sits the legendary 6.2-liter supercharged LS9 V8, equipped with a dry-sump oiling system, titanium intake valves, and a 2.3-liter Eaton supercharger. Directing 636 horsepower and 601 lb-ft of crushing torque strictly through a heavy-duty Tremec TR-6060 6-speed manual transmission, this rear-wheel-drive missile launches from 0-100 km/h (0-62 mph) in 4.2 seconds and runs the quarter-mile in 12.1 seconds. To handle the immense power of the Corvette ZR1 engine,