The Buick Gran Sport 455, called a luxury supercar by some, makes a great show car because it mixes power with plenty of chrome and styling. Bucket seats, a convertible option, and a comfortable back seat made this car the best way to get luxury and performance from GM since Cadillac focused on luxury at the time. The high-end horsepower of the 455 engine could be balanced with the GSX package upgrade for improved performance and handling and hopefully showroom appeal as well.

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