Okay - I was under the impression that the flat tops would not have been standard on that vehicle (too early). If I was wrong, I stand corrected.
I was talking about my personal opinion/tastes - if I had a bone stock 240ZG with steel wheels, hub caps, and flat top carbs, all of the above would be removed and replaced with items to my taste. While I am not into wild mods (as suggested by the generally "traditional" upgrades to my car), "Factory look" is not a particular concern to me.