Does a 1978 Datsun 280Z have catalytic converter?

Yes, the 1978 Datsun 280Z has a catalytic converter. Catalytic converters were required on all new cars sold in the United States starting in 1975, and the 280Z was no exception. The catalytic converter is located under the car, near the exhaust manifold. It is a metal canister that contains a catalyst, which helps to convert harmful pollutants in the exhaust gases into less harmful substances.