Plymouth Barracuda 1970 - 1974

The redesign for the 1970 Barracuda removed all its previous commonality with the Valiant. The original fastback design was deleted from the line and the Barracuda now consisted of coupe and convertible models. The all-new model, styled by John E. Herlitz, was built on a shorter, wider version of Chrysler's existing B platform, called the E-body. Sharing this platform was also the newly launched Dodge Challenger; however, no sheet metal interchanged between the two cars, and the Challenger had a 2-inch (51 mm) longer wheelbase.

The E-body Barracuda was now "able to shake the stigma of 'economy car'." The high-performance models were marketed as 'Cuda. The E-body's engine bay was larger than that of the previous A-body, facilitating the release of Chrysler's 426 cu in (7 L) Hemi for the regular retail market.

The Barracuda was changed slightly for 1971, with a new grille and taillights, seat, and trim differences. This would be the only year that the Barracuda would have four headlights, and also the only year of the fender gills on the Cuda model.

With a new grille and single headlights (very similar to the 1970 model) and four circular taillights for 1972, the Barracuda would remain basically unchanged through 1974, with new body side stripes, and minor changes to the bumpers to conform with federal impact standards being the only significant variations. Big block engines (383, 440, & 426 Hemi), heavy duty suspensions and rear axles, and large/wide tires mounted on 15" x 7" wheels were no longer offered. Additionally, the convertible model was dropped.

Source: http://en.wikipedia.org/wiki/Plymouth_Barracuda