The 1968 Plymouth Barracuda fastback was a second-generation model known for its aggressive styling and performance, featuring a sleek fastback roofline. It was available with a range of engines, from the standard 225 Slant-6 to powerful V8s like the 318, 340, and the rare 426 HEMI, with the latter being built as a limited-edition drag racing model. Key features included updated safety lights, wraparound taillights, and the performance-oriented Formula S package, which added suspension upgrades and handling improvements.