1. Extract the storagefam folder

2.Drop the storagefam folder into your DLC directory:
Grand Theft Auto V\mods\update\x64\dlcpacks\

3.Open OpenIV and navigate to:
mods\update\update.rpf\common\data\dlclist.xml

4.Right-click dlclist.xml, select Edit, and add the following line at the bottom of the list:
<Item>dlcpacks:/storagefam/</Item>	