You must have failed the Naplan test EML.
It's Nepean
Back then there were a lot of Japanese oil burners fitted to Slider frames, the reason being that most of the guy's who rode them also rode Jawa's, Jap's or the like and they all had brittish gearbox's.
I remember getting off my standard KX250 and onto my Hagon Jawa, going for the brake into the R/H at Nepean and finding top gear instead.
That was exciting.