Something I noticed was the first pic shows the power steering cap as the plastic multi rib top. When was the transition from the other 2 rib metal cap? My Nov built 307 car had the 2 rib metal cap..?.. Was it another case of multiple suppliers?
I've been watching PS caps for years - never seen an original 69 Camaro with a metal one. Possibly other car lines.....
There was a big discussion about them in the past.
I found the thread after a search & I am still not sure it can be 100% confirmed that all 69's came with the plastic cap... Personally I would think either or would be acceptable (assuming the metal cap was painted black). 67-8 would be zinc'd or natural. I actually just re-zinc'd 2 metal caps this morning. One was painted black with zinc underneath & the other was just zinc... One that was just zinc has a longer plastic dipstick & is clear or yellowed from age.