2007 is where the Harley-trimmed pickup became a serious performance truck. The 5.4-liter V8 was still standard, but an optional supercharged version from noted Mustang tuner Saleen delivered 450 horsepower and 500 pound-feet of torque. Technically it’s still the most powerful F-150 Ford ever offered from the factory, a title shared with the current crop of top-trimmed EcoBoost-powered trucks.