The Porsche Penske Motorsport works team is fighting for victory at the 24 Hours of Daytona.
At the three-quarter race distance mark, the #6 Porsche 963 was running in the lead for a while, before swapping the lead spot with the #7 sister car shortly afterwards.
The hybrid prototypes fielded by the customer teams Proton Competition and JDC-Miller MotorSports remain on course for a top result.
In the GTD classes, all five Porsche 911 GT3 Rs are still in contention.