Provisionals, more testing, and making the race on speed — NASCAR looked to its past in making a host of rules changes for the 2013 season that the sanctioning body hopes will put more of an emphasis on who has the fastest race cars.
Read MoreProvisionals, more testing, and making the race on speed — NASCAR looked to its past in making a host of rules changes for the 2013 season that the sanctioning body hopes will put more of an emphasis on who has the fastest race cars.
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