Holley Hi Ram Chev LS1 / LS2 / LS6 V8 Cathedral Port EFI Manifold # HO300-122Holley Hi Ram Chev LS1 LS2 LS6 V8 Cathedral Port EFI Manifold # HO300 122 Intake Manifold, EFI Hi Ram, Aluminum, Natural, Chevy, Engine Block Style: Stock OEM standard deck Cylinder Head Configuration: Cathedral Port Injection Style: Multi port Basic Operating RPM Range: Idle 8,000 Intake Section Included: Complete EGR: No Injectors Included: No Multi Port Fuel Rails Included: Yes Aftermarket Fuel Rail Required: Yes Throttle Body Included: No Throttle