Complex sentence: The 280ZX was branded in the American and Australian markets as the Datsun 280ZX; and in the local Japanese market as the Fairlady Z. In the 1979 model year in the American market, it was co-branded Datsun by Nissan through the 1983 model year.
Split into simpler sentences: The 280ZX was branded in the American and Australian markets as the "Datsun 280ZX"; and in the local Japanese market as the "Fairlady Z". For the 1979 model year in the American market, it was co-branded "Datsun by Nissan" through the 1983 model year.