Moving camera gameobject on oculus rift tilt

Hey everyone!

I'm trying to move forward my camera gameobject when the rift tilts down, so as to let the player lean over the edge of a ship and look down below. Similar to what happens in Euro Truck Simulator when you look behind you, and automatically lean out the window.

The player object is just a static camera, no moving around. So I just need my camera's position to shift forward a bit when the rift is looking down. I'm using the DK1 so no positional tracking, just orientation.

Thank you so much for any help and tips !