Arlen Ness Stage I Billet Sucker Air Filter Kit with Scalloped Billet Cover for - One Size Features a one-piece aluminum backing plate/carb support bracket with patented hidden breather technology and radius air inlet Eliminates the need for banjo fittings, hoses and filter Breather passages exit at the mouth of the carburetor/throttle body, creating a virtually closed-loop system Kit includes high-performance filter, backing plate and billet outer cover, and air filter cover All necessary hardware and instructions are included with each kit