1968-1974 AC/DELCO AIR FILTER ELEMENT, 4-BARREL WITHOUT RAM AIR, INCLUDES 400 AND 455 (A-BODY WITH PONTIAC V-8) AND 1972-1974 350 EXCEPT HEAVY DUTY (X-BODY) (GM) 1977 AC/DELCO AIR FILTER, 350R (A-BODY) (GM)