Converting third party Unity games to VR

Hi forum. Sorry if this has been asked before, but I could not find that it was.

There are a ton of non-vr Unity games out there, but not so very many in VR. I suppose not everyone has the expensive hardware, or maybe they just don’t like VR. I’m talking about full 3D rendered VR via Vive, Oculus, Index, HP, etc.

I’ve been considering getting started with Unity, but really my primary interest at the moment would be to mod certain non-VR Unity games to VR for my own use, and perhaps work with Unity non-VR developers to make their games VR compatible. I had seen a VR conversion mod like this done a few years back for one title, and the results were stunning, but I have not seen it done since.

Is this possible with either the enthusiast or pro version of the Unity dev environment?

Thanks

Generally, no. You would need access to the source code for the project.