GS 340

The Buick GS 340 (1967) was a one-year-only midsize muscle variant of the Skylark, built around Buick's 340 cubic-inch V8 with twin scoops, red striping, and GS-specific trim. The GS 340 served as the entry-point Gran Sport for buyers who didn't want the bigger 400 V8, and the limited one-year run makes it a rare find today.