the RZ-1, while maintaining the traditional fastback associated with the Sunny Coupé. The Sunny hatchback and sedan were introduced with a square appearance, while the RZ-1 was more angular, with a more sharp appearance. The interior could only accommodate four people, with a black mask between the front headlights, retaining the strong slant angle, adding blistered front and rear over the wheels, and a wrapped around window treatment for the rear hatch, that had hit a different personality hatchback and sedan. The angular approach was also used on the Nissan EXA, which appeared internationally at the same time, and earlier on the Nissan Leopard. Initially, the engines offered to Japanese customers were the E15S type (1500 cc straight-four SOHC), and the E15ET type (a turbocharged, fuel injected version of the same), but in August 1986 the CA16DE type (1600 cc straight-four DOHC) was added. Nissan introduced something called the "TWINCAM series" and the "TWINCAM NISMO", this included special suspension and aero parts that offered Japanese customers a customized specification, offering special interior appearances, including power windows that were not available on lower trim packages. In export markets it was mostly sold as the "Sunny Coupé", but export markets generally did not receive the higher trim packages available in Japan. In Europe, the Sunny Coupé was also available with the larger, 1.8-litre 16V twin cam CA18DE engine. In an unusual move, this was more powerful than any option available in Japan, where such a model was seen as a possible threat to sales of the Silvia series. A limited number were also manufactured in South Africa with this engine. It is speculated that production of this model were 720 units with at 6400 rpm and 159 N·m (117 ft·lbf) at 5200 rpm, although this number has never been confirmed to this day. B13 (1990–1993) The B13 was introduced in 1990 and retained many of the B12's ideas but in a more rounded, up-to-date body. It was particularly successful in the United States where the sporting two-door Sentra SE-R was marketed by Nissan of America as a latter-day BMW 2002. The car continued in production in Mexico until 2017, where it was sold as "Tsuru", for domestic and export markets. The Tsuru was quite popular among cab drivers for its reliability and low maintenance costs. The Mexican-built Tsuru was exported to Chile and Peru, where it was sold as the Nissan V16