A Plum Crazy 1971 Plymouth ‘Cuda with a Shaker hood, billboard stripes, and three two-barrel carburetors feeding a 440 is about as loud as Mopar ever got. Plymouth quoted 385 horsepower, a figure even people close to the factory considered conservative. What is genuinely surprising is how few buyers ordered it that year: just 254 cars. Read on to find out what happened to make one of Plymouth’s best engines disappear almost overnight.