Server files for FiveM for GTAV Enhanced can be downloaded from the Server Download page.
We published Alchemist, a tool to convert existing assets to work with FiveM for GTAV Enhanced. For more information on how to use Alchemist, please refer to the Alchemist Documentation.
We created a page that details the differences between FiveM and FiveM for GTAV Enhanced, including removed features, breaking changes, new config variables, and behavioral differences. You can find this information on the What's Changed in FiveM for GTAV Enhanced page.