It’s been three months since the Lamborghini SC63 made its debut in the GTP class of the IMSA WeatherTech SportsCar Championship, which was also the last time the car was seen in IMSA competition. That may seem like a long time with nothing going on, but there’s actually been a lot happening with the car in that time. The car that rolls onto the track at Watkins Glen this weekend is a significantly improved version of the prototype.

Lamborghini Iron Lynx has been running a single car in both the IMSA Michel in Endurance Cup races and the FIA World Endurance Championship. For the 24 Hours of Le Mans, the manufacturer fielded two cars in a race for the first time. At Sebring, the car acquitted itself nicely for a debut, finishing on the lead lap — and not even the last car on that lead lap. At Le Mans, both cars finished the race, albeit a couple of laps down, in 10th and 13th.