Hi Rob,
My gut instinct is that you wont be able to fit the roof racks which the roof box would fit to.
On the standard roof, there will be 4 points integrated into the rubber drip lines (they're pretty obvious as they have black plastic covers on them).
If you can see these 4 points, then you will be able to fit the roof rails, if not then you cant so I would suggest taking a look up there or posting a picture for us to take a look for you. I presume that the 2 rear points are present but the front ones arent due to the glass but best to make sure.
Hope that helps