9.0L DOHC Big-Block From Mercury Racing - Hot Rod Magazine

Introducing the new 300R and 300 ROS outboards—put to the ultimate test by Travis Pastrana. This is peak performance, Mercury Racing style. | Mercury Racing

The Mercury Racing Deuce High outboard - the ultimate engineering feat. With a fuel-injected 200-horsepower V-6 ProMax EFI powerhead and advanced propulsion system, this engine was capable of maximum power. Its mid-section and gearcase were designed using the best of sterndrive and outboard hydrodynamic engineering, along with a clever prop clutching device. Despite its impressive features, the Deuce High faced marketing challenges due to its high-end hardware, which drove up its price. Only two