Most of us don't have SLI, so that is a problem, but https://devtalk.nvidia.com/default/board/98/linux/ that board might be useful.

Let me just understand something with your first post..
I have tried the post by blackMORE but ended with gdm3 not working after setting up the xorg.conf file. So I decided to follow this guide but I encountered an error. The error comes up while trying to install the official nvidia drivers. When I run the installer it gives me an error "unable to load kernel module"
Are you saying that you could install your nVidia drivers with blackMORE tut? If so, did you do a fresh Kali install before following this guide? Just making sure here.