Pirelli World Challenge: Porsche Back on Top.
George Achorn, , Motorsport News, 2017 Pirelli World Challenge, 911 GT3 R, 991.2 GT3 R, Alec Udell, GMG Racing, James Sofronas, Patrick Long, Pirelli World Challenge, Road America, 0North America’s only Porsche factory driver, Patrick Long, earned his second Pirelli World Challenge (PWC) GT Sprint Championship race...