Portland International Raceway, Portland, ORJuly 7-10, 2017 Eve Micheff’s 1969 Chevrolet Corvette leads a pack of cars out of Turn 7.Photo: Jeff Mach Kurt DelBene raced his 1998 Benetton B198.Photo: Jeff Mach Greg Heacock brought out his sleek 1967 Costin Nathan GT.Photo: Jeff Mach Mark Jaremko at speed in his 1975 March 75B Formula Atlantic.Photo: Jeff Mach