I’m using today’s latest experimental as of this time.
When I try to put Hard Plating on bits of my vehicle, I get debug messages saying Item Not Found, but the plating is installed anyway.
The hard plating present in a nearby storage container doesn’t seem to get used up.
This is a bit of a game breaker…
Edit: When I picked up the plating from the storage container and then installed it, it worked normally and was used up.
So basically it seems like you can get infinite vehicle parts by installing them in storage on a vehicle when you are building bits on that vehicle.