Car Meta Files [HELP?]

So im installing British police cars [Server-Sides, (Stream)] for my server but a lot of them come with meta files, where do i put these?

There a few good sites on here and lot on YouTube.
Simple it you need to make a resource .lua file and the yft and ytd files need to go into a folder named stream.

the meta files are what controls the car like how it drives and what colors it has etc so those are needed you want to stream those files so the cars work properly for all the clients on the server. its all copy paste just make sure the format is proper and copy all the meta parts required for that car and stream just those or you can get a whole meta with all cars and stream it but that might change stuff then make sure u get all the parts for the cars some metas have multiple spots that control different things for that car so you might have to copy multiple sections