NOS GM 1971 Formula 455 HO only dual snorkel air cleaner base. Sale is for the lid, base and original stapled vent filter. Extremely rare to find in any condition. Lid appears to be used but base has never been installed. Original box is not included. No damage or rust. This is for HO Formulas WITHOUT ram air. Paint will need touch up but will be perfect for the survivor car as-is.