Images for Reproduction heater gaskets for 1964-66 models with deluxe heater. This quality 6-piece set will include the gaskets needed for restoration of the deluxe heater box, including the heater case to firewall gasket. Note: Determine if your truck has the Deluxe Heater Option by referring to the heater ID Guide below before ordering this part. Heater Identification Guide: 1960-63 Recirculating Heater: Two Lever Control Panel. Blower Motor in Cab Under Dash 1960-63 Deluxe Heater: Four Lever Control Panel. Blower Motor in Engine Bay 1964-66 Thrift Air Heater: Single Knob Control. Pull Fan Knob. Blower Motor in Engine Bay 1964-66 Deluxe Heater: Three Lever Control Panel. Blower Motor in Engine Bay Applications: 1964-1966 Pickup Truck - With Deluxe Heater 1964-1966 Suburban - With Deluxe Heater 1964-1966 Panel Truck - With Deluxe Heater GM Applications: 1964-1966 GM Pickup Truck - With Deluxe Heater 1964-1966 GM Suburban - With Deluxe Heater