We're two races into the Chase, and the three guys atop the standings (that would be Tony Stewart, Kevin Harvick and Brad Keselowski) aren't the three guys we expected (that would be Jimmie Johnson, Kyle Busch and Jeff Gordon). So which of these three is the biggest surprise? Do all of them have what it takes to sustain? Check out some chatting from Yahoo! Sports' NASCAR dudes, the Jays Hart and Busbee, and offer up your own thoughts below. Go!