Fan made GTA VI Intro in GTA V.
It installs in mods/update/update.rpf/x64/movies so if you want stock intro then you can drag drop from location of original update.rpf to modded one.

Subscribe my YouTube channel:www.youtube.com/c/GTA-MasterOfficial/

v1.0 - Initial Release
Intro by Lazlow(YouTube)
https://www.youtube.com/watch?v=8ar17F4M86I

v2.0 - GTA VI Logo Changed
Animation by Marlon Marins(YouTube)
https://www.youtube.com/watch?v=wPWpP7tErGI

Enjoy.