In 2023, Stichbury earned the coveted scholarship seat in the Porsche Michelin Sprint Challenge Australia after a competitive shootout at Hampton Downs Motorsport Park. Driving a Porsche 991.2 GT3 Cup car adorned with a nostalgic Whittaker’s Chocolate ‘Peanut Slab’ livery, a tribute to his late father Ashley Stichbury, Zac impressed with consistent performances and finished the season ranked third overall.

Building on this momentum, Zac graduated to the main scholarship seat in the 2024 Porsche Carrera Cup Asia. His promotion marks a significant step in his career and aligns with the same pathway once taken by Earl Bamber himself.