The Plymouth Barracuda saga began in 1964 as a fastback coupe based on the Valiant. The first-generation Barracuda was mostly famous for its distinctive wraparound rear glass, but also for being Plymouth’s first sporty, compact vehicle or "pony car." No match for the popular Ford Mustang, the Barracuda was redesigned for 1967, when notchback and convertible versions joined the already familiar fastback. Although still Valiant-based, the second-gen Barracuda received new sheet metal and larger engines, including Chrysler’s 7.2-liter, 440 Commando V-8 and the 7.0-liter, HEMI 426 V-8. The Barracuda reached its popularity peak in the early 1970s, as the heavily redesigned, third-generation model joined the muscle car wars. Longer and wider, the 1970 Barracuda renounced its Valiant roots and adopted an image of its own, while sitting on Chrysler’s new E-body platform.