Chris,
IMO this is one of the more challenging areas of concours restoration. Apparently Ford wanted to advertise a low maintenance vehicle, and determined that sealed joints that did not require periodic greasing was something they could use in advertising as a benefit. As to your specific question regarding what parts, if any, had zerk fittings, I'll say "none" and let others chime in and provide any corrections. This includes drive shaft universal joints as well.
However, the Ford service parts, at least everything I've seen from 1975 on, had zerk fittings. That is why you will see in many posts here statements that the Ford NOS parts are not "correct". When you expand to non-Ford parts (Moog and others), zerk fittings were the norm.
For the ball joints, I have seen some original looking ones that appear to have a very small hex head plug that could be removed to add grease, but I'm not certain that these were indeed assembly line correct.
As Jeff mentioned reproduction upper and lower control arms usually have issues with rivet style. Jacking tabs and dust boots are generally problematic also.
The conclusion of many is that the only way to go here is to find good originals and restore them. Decent looking replacement boots are available. There are some services offered by some, but it is not cheap.
Of course some will say that it is foolish to drive a vehicle with used suspect tie rods, for example. As always the choice is yours.
Unfortunately there is no easy answer.
