So, not sure why some mods linked in this forum have been locked. I could understand if they were broken / no longer functioning with the latest versions of the game. But, the Allowed Place mod;
https://steamhost.cn/steamcommunity_com/app/645630/discussions/1/1470841715963184041/?ctp=19

It still works for me and it's a big time saver--so that I don't have to manually edit every single car config file for the game. Personally, I believe ALL cars should be set to have a chance to show in the Junkyard......or barns (Shed)....cuz people total out Brand new cars all the time. Chit happens as they say.

Anyway, I still use this mod and LOTS of people still play CMS2018 so, it's still a relevant mod imo.