The replacement R-code 428ci Cobra Jet V8 was factory rated at 335 horsepower and 440 lb-ft of torque.The engine was overhauled and features a four barrel carburetor, chrome valve covers, an open-element air cleaner, and a dual exhaust system.Power is sent to the rear wheels through an overhauled replacement C6 three-speed automatic transmission as well as a custom 31-spline Currie 9″ limited-slip differential with Torsen 3.00:1 gears.The five-digit odometer shows 54k miles, total mileage is unknown.