To get the system for your FiveM server, it is highly recommended to download the official source files directly from the QBCore Framework GitHub rather than using third-party .rar files, which may be outdated or contain malicious code. Popular QBCore Inventory Versions
The "interesting piece" you might be referring to could be one of several popular custom redesigns or forks of the standard system: Download QBCore inventory rar
qbcore-framework/qb-inventory: Slot Based Inventory ... - GitHub To get the system for your FiveM server,