1967-69 Camaro / Firebird ; 68-79 Nova Fiberglass A/C Delete Cover This AC delete cover for 1970-81 Camaro and Firebird models allows you to remove your existing air conditioning evaporator unit while maintaining the heater functions. Delete cover is manufactured from molded fiberglass with a black gelcoat and is designed to mount to the firewall where the stock AC evaporator core and case are normally located. This cover will allow more space for large valve covers and headers as well as big block engines while keeping the heater unit intact. Note: Mounting holes are not drilled.