Nothing overly special, just a minor tweak to the parked vehicles that spawn on Jantsuu's big ass tower.

Installation:

1: Install this mod:
https://www.gta5-mods.com/maps/jantsuu-tower-add-on-sp

2: Add the "skyscraperProps.ymap" file to "E:\SteamLibrary\steamapps\common\Grand Theft Auto V\mods\update\x64\dlcpacks\jtower\dlc.rpf\x64\levels\gta5\jtower.rpf\"