Our unique design based on Holley's proven HiRam manifold provides unmatched power and torque production for a manifold in this compact of a package. Designed specifically for boosted engines the dual plenum intake excels in perfect air distribution across the engine. Insuring that each cylinder is reaching it's full potential to maximize engine efficiency and output. Measuring just under 9-7/8" from the valley flange of the block this provides an additional 3" of hood clearance versus the standard Hi-Ram configuration. This is standard lid, for race lid call us.