Those are braces, arranged in a "V" between the grill and radiator. They attach at the top to the radiator support and at the bottom middle just behind the grill. I seem to remember one is slightly longer than the other so try different arrangements for best fit. I tried to find this in the Factory Assembly Manual but that shows 1954 only and the grill and radiator support designs had changed.
Kent
Last edited by Lightholder's Dad; 05/04/2020 2:49 AM.