I think a lot of it depends on the weather and how the upgrades go. Same could be said for Ferrari, who are rumored to be thinking about an engine upgrade for Montreal.
Right now it looks like we may have a repeat of 2011 with a forecast of heavy rain, 12mm, on Sunday and changeable conditions throughout the weekend. If it is raining off/on Saturday then the grid could get all messed up and make the race really fun.
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