Dick Johnson 's win in Round 5 at the Adelaide International Raceway was the world 's first race victory for the Sierra RS Cosworth .
Was also Dick Johnson 's first ATCC win since Round 4 of the 1984 ATCC at Surfers Paradise .
Dick Johnson 's win in Round 5 at the Adelaide International Raceway was the world 's first race victory for the Sierra RS Cosworth and was also Dick 's first ATCC win since Round 4 of the 1984 ATCC at Surfers Paradise .