Includes everything you need (except a bottle heater). >250hp NOS Cheater nitrous solenoid. >Nitrous Outlet Big Show 6an Purge Solenoid. >A-Pillar with pre-installed and pre-wired Fuel Pressure Gauge with indicator light as well as a Nitrous Pressure Gauge with indicator lights for "bottle open", "bottle close", and "bottle heater active".