2020 50c 60 Years of Supercars Nissan R32 Skyline GT-R PNCThe international Group A regulations came into full effect in Australia from 1985 until 1992, and the Nissan Skyline GT R dominated the era. Driving on all four wheels and featuring an incredibly powerful turbo charged 2. 6 litre six cylinder engine with 465KW of power, its no surprise that this GT R was nicknamed Godzilla on the circuit. It was also the reason for the 1993 rule changes and the introduction of the V8 formula we now know as Supercars.