Link:

https://drive.google.com/file/d/1YQA-xFFowWfCH6BvWcKyryd0LGxiyco2/view?usp=share_link

Installation:
Once the file is downloaded, go to the following path and paste the two files, in case it doesn't work for you, delete the folders "Configs", "Logs", "ViceCity" and any other files or folders you have and just leave the "PROFILES" folder:

D:\User\Documents\Rockstar Games\GTA Vice City Definitive Edition\Profiles\4BCE6AFB

ATTENTION!:
Make a back-up of your original files, and then when you finish unlocking the achievement, put your original files back.

Well, once everything is installed, they enter the game and in GAME they select the game called "Boomshine Saigon", I saved the game for them in the Sunshine Cars import garage to make it faster, then they go to the ice cream factory and look for the "Mr WhooPee" van and they take it to the dealership's garage and everything is ready, yes, they must have acquired the ice cream business.