Newly Designed Next Gen Carburetor Main Body! Totally optimized to make what was already good...GREAT! Turn a gas carburetor into an Alcohol or E85 carb with direct replacement components in less than 30 minutes! Easy swap-in, swap-out installation utilizing existing metering blocks if already calibrated, fuel bowls, and baseplate. Involves only 14 screws. Has adjustable screw-in air bleeds, high-performance down-leg boosters. Get maximum air flow with no air horn, choke tower, or choke control. Comes with all necessary non-stick replacement gaskets. PROFORM is a registered trademark of Specialty Auto Parts USA, Inc. Holley and Double Pumper are registered trademarks of Holley Performance Products, Inc. This product is supplied by Specialty Auto Parts USA, Inc. and it is not endorsed by any other carburetor manufacturer.