GS package with the 425 CI Super Wildcat V-8, rated at 360 HP and 465 lb-ft, paired with a three-speed Hydra-Matic automatic. The package included dual four-barrel carburetors and reduced-back-pressure exhaust, with factory air conditioning, power steering, and power brakes. Built at Buick’s Flint, Michigan, plant in the fourth week of April 1965, it carries the one-year-only clamshell headlight covers and Regal Black paint.