Owners of Small Block Chevy powered cars with 2- and 4-bbl. Holley® carbs with 5-1/8" necks don't have to cut up their air cleaners to make room for large-diameter distributors, such as HEI Offset forward by 1-1/2" to clear GM HEI distributors For IMCA and NASCAR Modifieds that require air cleaners to be mounted above the hood line, the raised bottom (3/8") design provides an overall height above the carburetor lip of 4-3/4" For late model stocks that require under-hood air cleaners, the dropped (1-3/4") design provides an overall height above the carburetor lip of 2-3/4" Finished in clear powder coat and comes complete with 4" filter elements, one 1/4"-20 and one 5/16"-18 offset stud and three 1/4"-20 and three 5/16"-18 hex nuts

*Not legal for sale or use on pollution-controlled vehicles unless originally equipped with an open element air cleaner.