Single Plane 4500 Carbureted Split-Design Race Intake Manifold GM LS1/LS2/LS6 Fits GM LS1/LS2/LS6 Carbureted with Black Finish HolleyThe manifold with An 8 fuel rails fits Gm Ls Gen Iii engines with cathedral port heads and has a 4500 Dominator style carb flange for carburetors, EFI throttle bodies, or EFI throttle body elbows, and is configured with a Ls Map sensor port along with other NPT plenum vacuum or air temp sensor ports. The Ls Race single plane intake manifold is designed for hi performance racing engine applications, 5. 3 to 6. 2+ liter displacements, N A or with power