Codewalker:
www.gta5-mods.com/tools/codewalker-gtav-interactive-3d-map
Sollumz - XML blender Plugin:
www.gta5-mods.com/tools/sollumz-blender-plugin
Installing
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1. Open Blender
2. Open Edit - Preferences - Add-ons - Install from zip (top right corner)
3. Select sollumz.zip included in this download
4. Enable the addon "Import-Export: Sollumz"