Replacing an inventory is the most invasive change in this catalog. It touches items, weapons, shops, jobs, vehicle trunks and every script that gives or takes an item, so read the product page for the SQL it imports, whether it expects ox_inventory or a framework-native inventory, and which item images are included. Budget time for re-adding your custom items.
Test against a copy of your database, not live. Two inventories cannot run at once, so plan the switch for a maintenance window and keep the old resource and its tables until players confirm nothing was lost.