Features: LS1 LS2 LS6 102mm High Profile Gen II Fab Intake Manifold 9.65L Big Volume w/ MAP Sensor Port + Fuel Rails Silver *9.65L Volume of Big Plenum for Higher Performance *3mm (1/8") Thick T6061 Sheet Aluminum Construction for Maximum Durability 102mm Throttle Bore Opening for Increased Air Flow *100% TIG Welded for Strength and Durability *Includes 3/8" Fuel Rail Kits *Intake Runners With Tapered Top is Designed to Increase Air Velocity and More Evenly Distribute Airflow to All 8 Cylinders Improving Performance and Throttle Response *Provision for MAP Sensor Located on Rear of Plenum .