Valve cover breathers

Hello, My 92 BRM Estate is a throttle body car and the valve cover on the passenger side has a pcv valve, as does the cover on the drivers side. My mechanics said the one on the passenger side should not have a pcv valve, but does not know what it should be.
tried numerous googles, but could not find the answer. eagerly await help before I go to a chain store and get the wrong breather. thanks

There is just a plastic insert with a hose on it going to the back of the aircleaner. A PCV valve will block flow from the aircleaner to the engine.

thank you, where can I get this insert?

You should be able to get it at a local parts store. The hose is a separate part, but you may still be able to get it from the parts store.

The only other option is from the local junk yard.

thanks