David Zuber brought his supercharged 1965 Chevrolet El Camino to the Cleveland Auto Show, and the new metal on the floor barely got a glance from him. The El Camino’s story runs from a short-lived 1959 debut on Chevrolet’s full-size platform to a Chevelle-based reinvention that turned it into a genuine muscle car in a truck’s clothing. Its factory engine lineup topped out well below what Zuber’s build produces today. Read on to find out what it takes to push a 1965 coupe-utility into 900-horsepower territory.