Nissan chassis model B310 was the fourth-generation Sunny. They were sold during Model years 1979-1982 and marketed in various countries as the Datsun 210 or Datsun Sunny. In some countries it was designated Datsun 120Y, Datsun 130Y, Datsun 140Y or Datsun 150Y, depending on the engine fitted.
For more details and how the Sunny family was developed, see History of Datsun 1200.