I got a GTX 960 installed in my Mac Pro 2008 and it's working great with the Nvidia web drivers, but to my surprise their Windows installer doesn't let you install drivers without the card being installed. The issue is I have to swap the card with the original because this one is not flashed. Is there a way to do this without installing both at the same time? That doesn't seem to work because slot 1 doesn't seem to like being used for a GPU?