@enjoythekilling Like three people before me said:
Rockstar does not support modding
meaning mods will conflict, and not all go together. There are no "combinations" for this game. There are no "official" way to make modpacks. You make them yourself, find if they work together or not, stuff like that. You can combine lots of car mods to make 70s traffic. You can combine different scripts for realism. It's all up to you. If some of them work, you can "kind of?" maybe make a modpack but eh, why bother.