You can set up the Livna repository, and use the Nvidia drivers from there. However, that may not resolve all the problems that can result.
When the kernel is updated, the kernel update will simply not be applied until the matching Nvidia update is available (You may not be happy with this delay).
I'm not sure how the Livna driver handles the GLX symlinks when modular Xorg is updated. This was not a problem in earlier versions of Fedora, because Xorg was not modular; now it is. There have been about a half dozen Xorg updates that have caused driver issues for Nvidia, requiring re-installs. I haven't found a good discussion of this issue.
If you run into a problem with the driver and want to report it at Nvidia's Linux forum
, you'll likely need to recreate the problem with the official driver.
If you want to use the Livna driver anyway, you can install it with:
rpm -ivh http://rpm.livna.org/livna-release-6.rpm
rpm --import http://rpm.livna.org/RPM-LIVNA-GPG-KEY
yum install kmod-nvidia