1969 big block chrome Valve covers stock

I believe 67-69 factory BB darts and barracudas all came from factory with the same chrome valve covers. There are more out there than you think. I didn't think 69 was any different than 67 or 68? Maybe others could chime in?
As I was writing this I forgot there was an exception. I believe that factory m code a bodies had painted covers because they came with 440's not 383's.