The car is powered by a turbocharged 3.8-liter V6 paired with a four-speed automatic transmission. The “Grand National Experimental” was created via a partnership between Buick and ASC McLaren, and each example was finished in Black over Sand Gray cloth. Features include unique GNX bodywork and trim, air conditioning, a Delco Concert Sound AM/FM cassette stereo, Stewart Warner gauges, a torque arm rear suspension, power-assisted front disc brakes, and 16″ cross-lace wheels.