facdap

I have a question about vehicle mods, yesterday I saw a guy driving a skyline. It is this possible? I can replace any car and everybody is going to see it? How does it work?

Hi everyone, im really interested in gta roleplay nowdays because it attracts me, but my cuestion is the following: Im form South America (Uruguay), so I would like to know if in this server are many people playing that speak my lenguage or if it possible for me to play anyway. Thanks