tie-rods yes, idler arm no way, pitman arm i doubt it. should be about the same setup i had on my 70 cougar, everything bolted up fine but, it was almost impossible to turn at low speeds. there are manual steering specific idler arms and i beleive a pitman arm as well, at least on the early cars anyway, not sure about 67-up. i didn't do a lot of research before i did mine, just used the manual centerlink without changing the pitamn and idler arms, i'll never do that again. at the time it was my cheapest option, because the threads on the PS control valve stripped out while i was driving down the road one way day, i had to make a lot left hand turns to get home because it wouldn't turn right, not fun.
if you get the pitman and idler you should be good, i would definately compare the pitman arms though, it is possible they are the same, but i don't think thet are, also the if your car had PS originally it will have a 16:1 box versus the 19:1 box that the manual cars had, so your steering effort is going to be higher, if you can get the box as well i would recommend, inless of course you want to keep the higher effort-quicker ratio of the power box.