The 1954 model year was a big one for Buick, as it marked the introduction of the sixth-generation Roadmaster flagship. Compared to its predecessor, the chassis was lowered and widened, and the handling was greatly improved. The long-running Fireball straight-eight engine was replaced by a new 322-cubic-inch V-8. Redesigned bodywork was more streamlined, and while the exterior of the Roadmaster was largely the same as that of lesser models in the lineup, it did have four fender-mounted “ventiports”—one…