Steam VR plugin / bat to modify headset tracking

I use an oculus cv1 headset and would like a plugin or bat file made that can add a scaler onto the tracking information for the headset into steam VR. For example, I want a 12cm movement in real life with the headset to equal 36 cm in the game. Right now I use a program that does this for the controllers but I also want it to work with the headset it self.