After a career that began in small production sports cars, first an MGA, and later the first Lotus Elan to run in Australian competition, Gibson quickly moved up into the touring car ranks.
Alongside his team boss, Gibson scored his first major win, defeating the Geoghegans after a re-count of laps (the Geoghegans were flagged in 1st but a lap scoring error had been made during their first pit stop).