Regardless if they fit or not, replacement requires bumper removal to install from behind. Not hard at all but if you're going to that trouble, try a cheaper solution first like Mothers Back To Black (or 303 or other equivalent) or simple removal and re-spraying with a matte black spray paint.
Good luck
PS - don't think s models we're titanium... yours are just neglected like many others. In '03 (?) they changed to body colored fin grilles.