Mostly, yes. But I've upgraded to modern-ish, machined-sidewall rims (Mavic Open Pro, 4CD, and MA3) for improved braking performance and longevity. Vintage rims tended to be of softer alloys which seemed to go out of true fairly easily and the "brake tracks" were pretty rudimentary. Everything else (Campy NR and SR gruppos, Cinelli bars and stems, 3ttt or Concor saddles) generally matches the age range of my rides: 1973 to 1985.
This is the only bike completely built with original components - and it only became that way very recently when I finally decided to give tubulars a go again after a long hiatus:
Braking feel is pretty wishy-washy, but no matter. I don't do much high-speed descending on it because the current freewheel doesn't allow for much in the way of climbing!
DD