Subaru will launch the new WRX STI Spec C a lighter and more track focused version of the already potent hot-hatch. The car will sport a slightly revised bodykit including a rally-inspired roof scoop and gold alloy wheels. To shed up to 70kg, engineers have installed lighter aluminum panels for the roof and boot, a smaller battery and fuel tank and thinner glass. Theres no word on any upgrades to the current 296hp 2.5L turbocharged boxer.