1972 Plymouth Barracuda: 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 (15" x 7") tires and wheels were no longer offered.
Additionally; convenience/comfort items such as power seats, power windows, and interior upgrade (leather seats and plush carpeting) options were dropped, though a sun roof could still be ordered. For 1972 only, three engine choices were offered: a 225 six, the 318 (base engine for both 'Cuda and Barracuda) and a detuned to meet emission standards 340. For 1973 the 225 six was dropped, with the 318 and 340 V-8's being the only engine choices.
For 1974 a slightly more powerful 360 V-8 replaced the 340, and the only real performance options retained were the 4-speed manual transmission (equipped with a Hurst shifter) mated to a performance ratio (3.55 to 1) rear axle for the 340 and 360 engine, giving the car a respectable (for the time) 0-60 time of 8.2 seconds.
Source: Wikipedia, 2013