The Monza was then prepared for the 1984 Sandown 1000, the final round of the 1984 World Endurance Championship. Driving alongside renowned Ron Harrop and fellow touring car ace Dick Johnson, Grice qualified the Monza a credible 18th (second in the invitation AC Class for Australian GT and Group A Sports Cars), and claimed the car lost nothing on the straights to the race winning Porsche 956B's, but lost time in the turns to the ground effects Porsches. Johnson later claimed that the car had more grunt from its 6.0L V8 than its handling deserved. They were eventually disqualified for receiving outside assistance from track marshals after completing 114 of the races 206 laps.