Designed by New Zealand artist Tyler Richardson of Helmart Design, Fullwood has retained a blue, green, and white colour but with a new twist.
The Darwin-born driver will once again drive for Walkinshaw Andretti United with backing from Middy's Electrical.
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The 22-year-old finished 18th in his maiden championship campaign, recording a season-best third at The Bend Motorsport Park.
Fullwood's first hitout of the year will come at Winton Motor Raceway on February 16.