I can see why you want to get rid of the XY grille.... if I was you, fit a XW grill and you have instant class
I have never seen a XT-R grille on a XW-XY. Problem is XW & XYs have wrap around indicators but XR - XT don't. You would have to fit XR-XT guards as well. Personally I wouldn't bother. Can I ask why do you need a metal grille?