On August 1972, a four-door hardtop sedan, with no B-pillar between the front and rear passenger side windows, was added to the options list. This generation introduced a new appearance, called "coke bottle", which began to appear during the 1960s and 1970s internationally. The four-door hardtop had a standard interior dome light and a secondary fluorescent lamp that extended from the front to rear passenger seats, attached to the ceiling for ambient purposes. The 2.4-litre engine was replaced with a larger 2.6-litre version to conform to emission regulations enacted in April 1973 without losing performance. Vehicles installed with Nissan's new emission control technology, including fuel injected models, could be identified by a NAPS badge on the trunklid. In South Africa, the car was sold as the Datsun 260C with a version of the L26 engine; this engine (still of 2.6 liters) was upgraded to produce in late 1975, when the car was somewhat confusingly renamed the Datsun 300C. Both the four-door sedan and two-door hardtop were available, and along with the upgrade the interior was renewed.