HOLLEY GEMINI QUAD ALCOHOL PRO-POWER (100-800h.p. Dual Stage) direct-port plate/15lb bottle 'The GEMINI QUAD ? is two GEMINI TWIN ? systems in one plate.Now our #1 selling dual stage for use on Ford,Chevy and Dodge motors.This dual stage plate has no equal for even distribution or power.If you have an open plenum intake for a Chevy,Ford or Dodge,and dual staging is required, Nitrous Express has the corners covered,so you can cover the competition.Systems come complete and include lifetime guaranteed large solenoids,heavy duty 60 amp anti-flyback relay,a 15lb bottle,stain- less steel bottle brackets,14 foot D-6 supply line (Race Hose).