Holley Part Number : 300-132. Carbureted single plane intake manifold. Fits all GM LS Gen III or IV engines equipped with LS1/LS2/LS6 style cathedral port cylinder heads. 4150 Square bore carb mounting flange (accepts up to 1.75 diameter throttle bores). Minimum carb flange height - fits in vehicles with minimum hood modifications. Cast aluminum construction - great manifold for centrifugal blower, turbocharged or NOS power adder applications. Efficient casting design - lightweight, consistent wall thicknesses, improved casting quality. Weight - 11.5 lbs. Height (front) - 4.95 to the lifter valley cover flange at the engine block front flange. Port size - 2.659 height x. Please contact before ordering if you…