stricter emissions standards. The V8 emblem on the bootlid was changed to one that reads "V8E". The chassis code was changed to A-H250. The type D was available in nine different sub-models listed as D-1 through D-9. The top versions had power everything, satin weave nylon seats, an early form of anti-lock brakes, and automatic climate control. This model was also the first Nissan to be equipped with a digital clock. In July 1976 the engine was modified to meet the 1976 emissions regulations and the model code changed to C-H251. The luxurious Sovereign trim was added in August 1977, when the emissions were again updated to meet the 1978 requirements. This iteration received the E-H252 model code and a redesigned grille. The type C trim level also returned in 1978. In March 1980 the stereo was updated to a AM/FM cassette unit, and a slave clock was added. In November 1982 the President was updated with suspension improvements, a larger fuel tank, a new instrument cluster and dashboard, a new grille, and the replacement of the round headlights with square halogen versions while maintaining the general exterior and interior appearance. After minor detail improvements and stereo alterations in June (after which bias-ply tires were no longer available) and December 1984, the Sovereign VIP trim (with air sprung rear seat and other additional comforts) was added in January 1985. In March 1986 the Nissan emblems were altered and the rear headrests became adjustable. Minor changes followed in November 1988, when the types C and D received the same wheel covers as the Sovereign, and in March 1989 when a shift lock was added. Production of the 250 series continued until October 1990, with a total of 33,128 units having been registered in Japan. Power output had been listed in gross horsepower until January 1990, when the President was brought in line with the rest of the industry. The claimed power figure dropped from net, but actual output and performance were unchanged. Third generation (HG50; 1990) In October 1989 the third-generation President, designated JHG50, debuted at the Tokyo Motor Show, with sales beginning a year later. Concurrently, a short-wheelbase version of the chassis debuted in the United States as Infiniti Q45 or Nissan Infiniti Q45 in Japan, with a different front and rear end — in response to the 1989 Lexus LS and the 1985 Acura Legend. Renewed emphasis sought to