This is the firewall mounted heater core housing duct removed from a 1961-62 Belair model non a/c cars.
1961 1962 CHEVROLET IMPALA FULLSIZE PASSENGER CAR HEATER CONTROL KNOB SET NEW
Blitech Aluminum Radiator Engine Coolant 24.7 x 16 Core Compatible with 1959 1960 1961 1962 1963 Impala / 1960-1965 Bel Air
TRQ Gas Fuel Tank 15.9 Gallon For 1961-1962 Chevrolet Corvette
1958 1959 1960 1961 1962 CHEVROLET 6 CYL 216 & 235 FENTON CAST IRON HEADERS
1958 1959 1960 1961 1962 Chevrolet front suspension rebuild kit new
1961-67 Chevrolet Impala 1964-1967 Chevelle Pontiac GTO Park Brake Release