The versatile GM “A” body platform allowed Buick to build a wide variety of cars that shared the same basic backbone and DNA, ranging from meek 6-cylinder 4-doors and post-coupes up through fully loaded luxury station wagons and convertibles.    This 1971 Buick GS 455 Stage 1 convertible is the recipient of some of the best Buick had to offer in ‘71, featuring the highest levels of power, style, and comfort all wrapped up in one sinister triple-black convertible.