The C110 generation was produced from 1972 through 1977.
For export in the 1970s, the C110 and GC110 Skyline was sold as the Datsun K-series, with models such as the Datsun 160K, 180K and Datsun 240K.
The body styles were, once again, four-door sedan, two-door hardtop coupé, and five-door station wagon. The C110 was more fussy in its styling than its predecessor, particularly so in wagon form, where unusually for a wagon design, no windows were fitted between the C and D pillars. Its appearance seems to be influenced by the 1970–1975 Citroën SM. The C110 was the first version to return to the round rear tail and brake lights introduced in 1963 albeit with dual units from the previous generation, and the appearance has become a traditional Skyline feature. The styling also influenced a smaller, more affordable two-door coupe, called the Silvia, introduced in 1975. Nissan introduced its emission control technology, primarily consisting of fuel injection on trim packages ending with an "E", using the moniker Nissan NAPS also in 1975.
The C110 Skyline was better known as the "Ken & Mary" or "Kenmeri" (ケンメリ) Skyline, stemming from the advertisement campaign in Japan at the time which featured a young couple (Ken and Mary) who relaxed and enjoyed the countryside in Ken and Mary's Skyline (ケンとメリーのスカイライン). The ads were highly successful and perhaps as a result the C110 was sold in very large numbers in Japan. It sold just as well in Australia (in a 2.4L 6-cylinder form, badged as "Datsun 240K"), though few survive today. There, the 240K was about the same price as a Ford Falcon GT or BMW 5 series, around $5000.
The Nissan Skyline GT-R hardtop arrived in September 1972 but only lasted until March 1973, when Nissan ceased its production. The oil crisis saw many people preferring economy cars and high-performance sports cars were looked down upon. Nissan pulled out of Motor Racing, so there was no purpose to the GT-R. It was not officially exported anywhere, although Nissan contemplated exporting to Australia. Only 197 KPGC110 GT-Rs were ever sold in Japan, through specialist Nissan Performance shops (before it was called NISMO). This was the last GT-R for 16 years until the BNR32 in 1989.
1600 – 1.6 L G16 I4
1800 – 1.8 L G18 I4
2000GT-X – 2.0 L L20A I6, 130 hp (96 kW, 172 N m)
2000GT-R – 2.0 L S20 I6, 160 hp (118 kW, 180 N m)
References : http://en.wikipedia.org/wiki/Nissan_Skyline#C110