4-inch CNC machined inlet. Four 1/8-inch NPT ports designed for optimal atomization of water-methanol or NOS. Accommodates stock mounting points. Optimizes air pressure and distribution into the intake manifold. Includes proprietary #1 fuel line, 4 to 3.5-inch hump hose, and all necessary hardware. Not emissions compliant. Requires Banks Boost Tube Upgrade: 2007-2009 (25990-Driver & Passenger tubes/25991-Driver Side only) 2013-2018 (25992-Driver & Passenger tubes/25994-Driver Side only)