Hi Lior
The light guards on a US Patton (M60A1 or M60A3) are welded to this metal elbow as double elbow. The first elbow is the reiforcing support for the Alluminum fenders, and the extended additional elbow is used as light guard.
In IDF Magach 6Alef or 6Bet, the additional elbow was removed, and the round bar light guards were connected to the reinforcing support, "hanging in the air" as the Blazer cassets cannot let the light guard to be connected to the hull glacis.
When building the Magach with the Nochri (mine roller) adaptor, the light guards are not used, as the main lights are re-locationed to the adaptor.
So you have two holes to fill in the support in the front of E23+E24.
I hope that this long text is explaining this matter.
Yal'la bye
Michael Mass