re: Lamborghini Trofeo:
Currently they are using Gallardo LP570-4 Super Trofeo Stradales
They will be replaced with a Huracan LP 610-4 Super Trofeo! This will be the first new car since 2009 when the series started with the Gallardo. This was just announced this month so expect them for the 2015 season. Watkin's Glen will still see the Gallardos racing. No photos or further info on the race-spec Huracan have been release yet....
"There's no word on specifications but the standard model has a 5.2-liter V10 engine that develops 610 PS (448 kW) and 560 Nm (413 lb-ft) of torque. It is connected to a seven-speed dual clutch transmission and an all-wheel drive system which enables the coupe to accelerate from 0-100 km/h in 3.2 seconds and hit a top speed in excess of 325 km/h (202 mph)."