You can find download links and community discussions for this specific mod on platforms like Mods.Club or ETS2.lt.
Most community listings indicate it was built for ETS2 1.36.x . SKINPACK FOR MERCEDES ANTOS12 V1.0
You typically need the base Mercedes Antos truck mod installed first, as the Antos is not a "vanilla" truck included in the standard game by SCS Software. You can find download links and community discussions