The Gemini Twin plate system is the most technically advanced single stage plate ever designed. The unique direct-port pattern assures you perfect nitrous-fuel distribution. It solves problems commonly found on single plane manifolds, particularly small and big block Fords. This new innovation provides superior distribution and outstanding atomization. With no spray bars to sag, split, block airflow, or damage this is truly the Next Generation in nitrous plate technology. This Stage 6 system includes jetting for 50, 100, 150, 200, 250 & 300HP and Includes limited lifetime warranty Lightning solenoids, heavy duty 40 amp relay, stainless bottle brackets, and 4AN feedline. Fits standard 4150 flange carburetors. (Alcohol version) Systems with a bottle include the billet aluminum Lightning 500 bottle valve. This valve not only looks great; It is packed with features including two integrated gauge ports, 5/8 siphon tube, a large .500 orifice and an improved flow path with only one 45 degree turn. The Lightning bottle valve looks great, flows great and weighs nearly one full pound less than our old style brass valve.