Restricting Vehicle Script?

I have some vehicles in my server I don’t want spawned like the Cargo plane and some other vehicles, is there a way I can restrict these vehicles from being able to be spawned using a trainer?

This might be of help: http://forum.fivereborn.com/topic/974/scrpt-disable-vehicle-peds-spawning

You cant prevent people from doing anything with their trainer.
If you dont want people to spawn shit you have to disable scripthookv make your own trainer out of Lua.