from a legit copy of GTA V (Rockstar Launcher/Steam). Searching for a pre-made download is risky (malware/cryptominers).
: Added three new festive car horns (like "Jingle Bells") and Christmas trees to apartments and Legion Square. Gameplay : Introduced the Beast vs Slasher Adversary Mode. Manual Installation (For Mods) Update X64 Dlcpacks Mpchristmas3 Dlc.rpf Download
Copy dlc.rpf to a safe location (e.g., Desktop\GTA_Backups\ ). from a legit copy of GTA V (Rockstar Launcher/Steam)