The Larbre Competition team has admitted it was surprised by its Le Mans 24 Hours GT1 class victory.
The French outfit's Saleen S7 - a model which first raced in 1999 - was off the pace of the class frontrunners early in the race, but took advantage when the Aston Martin, three Ford GTs and leading Alphand Corvette all suffered problems.
One of the team's drivers, Julien Canal, conceded that he was not expecting to have a chance of victory.
"I didn't really think we would win, but we did exactly what we were asked to do and it paid off," he said.
Team boss Jack Lecomte has run works-assisted cars before, most recently with Aston Martin in 2007, and said it gave him extra pleasure to win the class as a full privateer.
"I was backed by a manufacturer before, but this year I've done it all myself - and homologated the car," he said. "The Saleen has the reputation for being a fragile car, but this time it made 24 hours while many other cars did not."