Sonoma Raceway, Sonoma, CAJune 3–5, 2016 Leading a tight pack of sports racing cars is Stephen Thein’s Porsche 910.Photo: Jeff Mach Steve Schmidt’s ex-Whittington Brothers Porsche 935 K3 is chased by a pack of pursuers into Turn 2.Photo: Dennis Gray Dennis Losher brought out his Can-Am Shadow MkII.Photo: Jeff Mach