Enable oculus vr at runtime in compiled game

So I am trying to make a vr mod for this game, and it doesn’t have the “virtual reality supported” box enabled. So whats the best way to ether access the c++ functions by Oculus from c# or somehow get unity VR working without having checked the “Virtual reality supported” box?

EDIT: to clarify, I dont want any of the complex functions, I really just want a way to get the positions and rotations of all the different nodes and a way to render a camera to the vr headset.

Just asking, what does this have to do with modding?