Jim,
The guards I have clip in behind the headlight rim. They push on and the rim then presses on and has a screw located in the bottom.
I think these may be different to your set up.
Guess after seeing my car you understand the link between Kristen and me with our color/paint set up.
Kristen kindly advised me about the colour a few years ago when I was at that stage of build. I caught up with her in London Ohio afterwards..
No Vegemite tacos or sandwiches..
Bernie