Drag the car pack installer into “Open IV.” In the Package Installer window, select the ‘mods’ folder and confirm the installation.If you don’t have a ‘mods’ folder in “Open IV,” create an empty folder named “ mods” in your GTA V directory.Launch “ Open IV” and enable ‘ Edit Mode‘ by clicking the button at the top right corner.Go to the Installer folder and install the OIV package using “Open IV.”.Go to the downloads folder and open up the GTA 5 car pack Mod folder.In the GTA5 directory, go to the UserDLC folder under addonSpawner and paste the file there.Now open the ‘List’ folder inside the “ List and Images Car Pack by inter” folder, and copy the file inside.Navigate to the ‘img’ folder and paste all the images in this folder. Go to the GTA 5 directory and open the Addon spawner folder.After that, open up the images folder and copy all the images inside it.Open up the “ List and Images Car Pack by inter” folder, and navigate to the folder inside it.Drag the files (excluding readme.txt) from the downloaded folder into your GTA V directory.Now to install the Add-On vehicle spawner, go back to the downloads folder and open up the spawner folder.Double-click on this file, change the Heap size from 750 to 2000 and save the file.Locate the Heap adjuster configuration settings file in your GTA V directory.