Holley - Holley GM/LS EFI Mid-Rise Intake Manifold, LS1, LS2, LS6 - Image 4 【Fitment】Dokili Cast aluminum intake manifold for G. 【Premium Material】Built with natural cast finish aluminum of superb quality and fit. M LS1/LS2/LS6 Satin Holle., y 300-130 LS Single Dokili Dual Plane Carbureted 300-130 Intake Manifold Compatible Carbureted Manifold For LS1 LS2 LS6 About this item Swapping your fuel-injected LS motor to a carburetor? This Dokili dual-plane intake manifold is exactly what you need. It's designed for GM LS1, LS2, and LS6 engines and has a 4150 square bore flange to match a Holley 300-130 pattern carb. The dual-plane design is great for street performance, boosting torque and throttle response in a wide RPM range (from around 1,500 to 6,500... Angles and straightness comparable to factory manifolds. Dokili Dual Plane Carbureted Intake Manifold for G. Holley 300-256BK Carb Single Plane Split Design Intake GM LS Gen III I 【Package Includes】1X Intake Manifold, Mounting Bolts & Washers, Viton O-rings.