TOC said:Oh, wait...isn't the Cobra they're running against a kit car with a 2000cc Pinto engine?
There are classes, and then there are "groups". Groups vary depending on turn-out and the discretion of the organizing club. The weekend I photographed Phil at Heartland Park, I believe five different classes were on track together. The only other GT-2 car at the track that weekend was a tube-chassis Datsun 240Z. The blue Cobra appeared to be a brand-new kit-car, but I don't recall which engine. (I'm pretty sure it was a Ford V8 though.)

(Race Group: all these cars and several more were racing together.)