I'm not an expert on 1960s Buicks. Aside from the Riviera, it seems most of the Buick line was an upgraded version of the more common Chevrolets and Pontiacs. The 1963 Buick Wildcat may have a passing resemblance in profile to the 1963 Chevy Impala. That's because it is based on the full-size B platform Chevy, albeit with many changes. Wildcats were an interesting creature, more of a large sporty car than a general boulevard cruiser.
