This lower plenum is CNC machined and uses a Holley high ram style top flange to allow for the use of the 417 Motorsports intercoolers while gaining hood clearance without sacrificing performance. 417 Motorsports billet intake is 6" tall and Holley's high style intake is approximately 8" tall. Uses OEM intake, gaskets, and O-rings. The intake comes with one set of -8 fuel rails. Proven horsepower and torque gain over other leading intake options. Includes 1500hp intercooler. These coolers are an awesome solution for packaging and simplifying your underhood layout. Track and Dyno tested to drastically reduce the intake temperatures by up to 200 deg. Utilizing 2 female -12 orb ports per sided for water feed and return.