Air intake noise was reduced by enhancing the surface rigidity of the air cleaner case. A decal with Wile E. Coyote saying "Coyote Duster" was on the air cleaner lid. The "Rocket" name disappeared from the air cleaner identification decal after 1974. The car was equipped with an oil bath air cleaner. The Fordson carburetor and air cleaner were designed by Holley. The 235-horsepower version had argent silver valve covers and air cleaner. The air cleaner box base was modified to increase the airflow. Changes were also made to the brakes, front coil springs, air cleaner and clutch. Super 88 V8 engine with a four-barrel carburetor with a small, flat air cleaner. When the hood was closed, a rubber seal fitted over the large-oval unsilenced air cleaner. It basically was a 67-8 H.O version with a "Ram Air" air cleaner assembly. The aluminum plenums channel air from the air cleaner to the carburetors. A circular air cleaner is mounted on the bulkhead. Chrome air cleaner lids and cast magnesium valve covers dressed up all engines. This is the first whole home air cleaner to receive this Certification.