Having owned several 7.3L OBS Fords, Tyler Williams never thought twice about doubling the power of his 200,000-mile ’97. Most of that added power comes by way of a set of Full Force Diesel’s 180cc Stage 1.5 injectors, which are equipped with 30-percent larger nozzles. Everything else under the valve covers is completely stock. Even the factory 15-degree high-pressure oil pump remains, but is healthy enough to support the truck’s dyno-proven 370 hp and 690 lb-ft of torque.