The Skyline 2000GT C10 featured a less powerful 2.0-liter inline-six producing 120 horsepower instead of the GT-R's same displacement engine that cranked out 160 ponies.
Also from what we've read, the C10 Skyline series was produced up until 1971 as it was replace in 1972 by the second-generation C110 series that featured a different body. But in any case, we're pretty sure that if anyone is ready to pay out nearly $40k for a classic 1970s model will and should do his homework before writing a cheque.
Link: Gulliverusa , Via: Vwvortex - Kudos to Joe for the tip!