These Double Cross plate systems ensure a steady, precise, metered flow of nitrous and fuel into the engine and have been used by many leading racers to establish ET and mph records. Because the spray bars are at 90 degrees to one another, optimum distribution of the nitrous and fuel is achieved and cylinder-to-cylinder consistency is effectively maintained. Power levels are adjustable from 250 to 500 HP over stock and they're available to fit both square bore and Dominator-style carburetors. The systems include an unfilled 10 lb. bottle, solenoids, plumbing, electrical, and all required hardware.