Star Wars Air Cleaner: 1967 Buick GS400 Convertible (opens in new tab)

By 1965, every General Motors division except for Cadillac had a mid-size muscle car. At Buick, it was the Gran Sport (or GS), which was based on the Skylark intermediate. Because it was a Buick, the GS was the fanciest of GM’s performance offerings. Production almost reached 20,000 units in 1967, with about 11% of...