Here is the legitimate path to getting version 1.0.4.0: Bangbus — Lucy Lotus A Real Juicy Booty 041
If you own the game on Steam, you don't need a crack. You just need the original executables. Download - -toonmixindia- Sd Savita Bhabhi - T... - 3.79.94.248
Always scan files for viruses and support the developers by owning the game legally before you start downgrading and modding. Have you had success modding the Complete Edition, or is 1.0.4.0 still your go-to? Let us know in the comments.
If you have the game installed, locate your installation folder ( .../SteamApps/common/Grand Theft Auto IV/GTAIV ). Copy and paste the entire folder to a safe location (like an external drive). This is your vanilla backup.