Holley Mid-Rise LS Intake Manifolds are one of the simplest ways to drop a carburetor on a GM LS engine. They're compatible with all LS Gen III and Gen IV engines with LS3/L92-style rectangular port-heads or LS1/LS2 and LS6-style cathedral-port cylinder heads, and also available in black to add a stealth look to any engine bay. These carbureted single-plane intakes feature a large plenum area ideal for high-horsepower engines and engines with forced-induction or nitrous oxide – especially from 2,500 rpm to 7,000 rpm. Carbs with a Holley 4150 square-bore flange bolt right on, as do throttle bodies. Holley Mid-Rise LS Intake Manifolds have the lowest carb-mounting flange height available that doesn't sacrifice horsepower, and fuel-injector bosses for converting over to sequential EFI are built right in. Coupled with MSD’s LS Ignition Controller (part number 6014), they're best way to get a carbureted LS engine up and running fast. They come complete with all the necessary mounting hardware, pipe plugs for manifold vacuum and MAP sensor ports, and even O-ring cylinder head mounting-flange gaskets for an OEM-like seal. For more information on the complete line of dozens of Holley single-plane intake manifolds, click here.