French squad AKKA-ASP took fastest lap honours on the second and final day of the Blancpain GT Series official test, held at Paul Ricard.
Alex Fontana progressed to the top of the timesheets during the Tuesday afternoon session with a 1:56.558s effort behind the wheel of the #89 Mercedes AMG-GT3.
Fontana shared the car with Endurance Cup team-mates Daniele Perfetti and Ludovic Badey, who are set to compete in the Pro-Am category this season.
Second overall and quickest of the Tuesday morning runners was the Lamborghini Huracan GT3 entered by Orange 1 Team Lazarus.
A 1:56.650s time set by reigning GT Open champion Fabrizio Crestani put the Italian squad in charge until Fontana edged the Mercedes in front by just 0.062 seconds.
Pro-class duo Crestani and Gustavo Yacaman will share the bright orange Lamborghini in both the Sprint Cup and Endurance Cup this season.
Filip Salaquarda's Monday-best time of 1:56.789s behind the wheel of the ISR Racing Audi R8 LMS GT3 stood as the third quickest run of the test, with the Sainteloc Racing Audi squad slotting into fourth on the timesheets ahead of the Oman Racing Aston Martin.
Blancpain GT Series Test session 3 results
Blancpain GT Series Test session 4 results
The opening round of the Blancpain GT Series Sprint Cup takes place at Misano on April 2, two weeks prior to the Endurance Cup curtain raiser at Monza.