Cathedral Port Single Plane EFI Intake Manifold w/ Fuel Rails Fit For GM LS1/LS2/LS6Features 2600 6800 RPM Power Band 4150 Square Bore Flange Optimized Runner Layout And Constant Cross Sectional Area Broad Torque Curve, Best Vehicle Performance From 2600 6800 RPM Minimum Carb Flange Height Fits Most Vehicles With Minimum Hood Modifications Cast Aluminum Construction Great Manifold For LS Swaps, Centrifugal Blower, Turbocharged Or NOS Power Adder Applications Efficient Casting Design Lightweight, Consistent Wall Thicknesses, Improved