First of all, your stock pivots are aluminum and subject to wear. You can go to Checker/OReilly Auto parts and buy new ones for very little (I think I paid just over a buck each), and they're steel.
Second, the oil deflectors are available from a company called "Pioneer Automotive", somewhere in Mississippi. They're cheap, but the catch is, they only sell to engine builders, not to the public. My builder got them for me for $1.75 each. You have a couple broken ones, and that's an indication more could be weak.
The 3rd option: buy new rocker arms from Summit Racing. They have the later models that have a tang bent in them, so they don't need the add-in oil deflectors. Ford changed to that style in '72 or '73, something like that.
