Supercars is confident it will avoid another year dogged by accusations of unfair advantage after a review of its parity testing process.
Ford's new Mustang has dominated the 2019 championship, winning 21 races.
The accusations that the new model has an aerodynamic advantage over its Holden and Nissan rivals has led to multiple adjustments being ordered throughout the season.
That was despite the Mustang being ticked off by the competition officials after off-season testing at the end of last year.
Supercars chief executive Sean Seamer said those in-season changes had gone a long way to levelling the field but admitted it was a priority to avoid a similar situation next year.