Despite winning several races Best was only fourth in the series, which team owner Matthew White blamed on engine issues at the Winton round.

Best announced for his 2023 Super2 campaign that he would be making the switch to Anderson Motorsport driving an ex-Dick Johnson Racing Ford Mustang GT.

He partnered regular driver Jack Le Brocq in his Ford Mustang GT for the 2021 Bathurst 1000.

In the second of these, Best was involved in a collision with Gary Jacobson, causing Best to retire, with Best highly critical of the driving standards of the drivers towards the rear of the field.

[11] On July 30 2022, Best became the youngest and first Supercars Championship wildcard entrant to claim a pole position, which was done at the 2022 The Bend SuperSprint.