Recognizing the fact that the Ford GTs are walking away from their GT  Le Mans competition, IMSA has broken from its standard rules requiring a  two-week notification for making Balance of Performance (BoP) changes  by issuing an emergency order for BoP changes to take place before this  weekend’s running at the Canadian Tire Motorsport Park.    
  Racer.com  explained the changes following Tuesday’s technical bulletin as well as  the IMSA rules in making these BoP changes during the week of a race:
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