The assets are now available for UEFN! I used the Fortnite Base Material as the parent material, so there are no extra shaders. Also the Ambient Occlusion and Roughness channels are packed to use them in the existing material system.
Importing Method
Unzip the downloaded file.
Open ModernStreetProps01 > Meshes folder.
Create a new folder in your UEFN project.
Right click on that new folder > show in explorer.
Select all models in “Meshes”, copy them and paste into your new folder.
Repeat it for materials, textures, etc.
The map may look empty when you copy paste, I don’t know how to fix it. But copying and pasting assets work. Let me know if there are any issues.