sentences:  At a larger 5.0 liters, the engine was able to overcome the loss of its turbocharging while still maintaining the benefits of the original VRH35L design.At the 1999 24 Hours of Le Mans, Nissan planned to enter two R391s along with a third Courage C52 with the older VRH35L motor.In official testing for Le Mans in May, the R391s were able to set the 10th and 13th fastest times, beating out some entries from Mercedes-Benz, Audi, and BMW, although they were not able to beat Panoz or their main rival, Toyota.