HP MAIN BODY RETROFIT KITEliminates choke tower and associated hardware of standard Holley® double pumper carburetorReduces turbulence and smoothes air entry into the venturiPre-calibrated at the factory for optimum performance and driveabilityChange a Holley® standard double pumper carburetor into a HP carburetor for additional horsepower, torque and airflow! An affordable alternative to HP series carburetors for entry level racers-the same main body that is found in every NASCAR Nextel cup car. Simple installation with common hand tools. Kit includes assembled main body with screw-in air bleeds, down-leg boosters, accelerator pump shooters and vent tubes; carb to baseplate gasket; 2 metering block gaskets; 2 float bowl gaskets; 8 bowl screw gaskets; main jets to properly calibrate for street/strip/racing action; detailed instructions and all necessary hardware. 90-day Holley® warranty. Shipped separately from factory. NOTE: SKU numbers ending in F are factory shipped and may take a little longer to reach you.