 The six-cylinder, and 292 and 352 V8s were dropped and the 390 V8 became the standard engine with 250 horsepower and two-barrel carburetor with a 300-horsepower four-barrel version optional.At mid-year, the fastback Marauder was introduced.Mid-1963 saw the introduction of the "Marauder," basically the 1963 1/2 Ford Sports Hardtop "fastback" roofline adapted to the Mercury body.