From RaceMonitor, it says all of the top-10 were on Leopards. True? Pagano first Rotax in 11th? …sorry, I didn’t get to hear the audio.
Peterson is the only Rotax in the top-15, rest are leopards. Only two others on Rotax. From what I’ve seen and heard, most brought the Leopard engines. Not aware of drivers switching from Rotax to Leopard on the day.