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The ultimate Holden Commodore is here.

Confirming rumors that have been swirling for the last few months, Holden tuning shop HSV has unveiled the ultimate tribute to the popular Commodore with a fire-breathing version of the four-door sedan. Production of the Holden Commodore is scheduled to end by the end of 2017.

Known as the GTSR W1, the hopped-up Holden uses a 6.2L supercharged LS9 V8 borrowed from the last-generation Corvette ZR1. That means that this super sedan delivers 635 horsepower and 601 lb-ft of torque. Shifting through a six-speed manual transmission, the GTSR W1 should be good for a 0-60 run of just over four-seconds.

Other upgrades over the standard Commodore include a race-inspired SupaShock suspension system, 20-inch wheels wrapped in Pirelli P Zero Trofeo R race tires, 6-piston AP Racing monoblock front calipers and a bi-modal twin-exhaust system.

The interior of the GTSR W1 features acres of Alcantara and a set of front racing seats.

Other details haven't been announced, but it is believed that HSV will produce just 250 units of the GTSR W1, each carrying a price tag of about $130,000.