not very (except for matching wheels and tires)
my 84 team miyata I would have liked to be a bit more OCD. with, it did not come with period brakes and levers, but I could find those, the killer was it had a 165 cm Dura Ace ex crankset and I had no luck in finding one or one that was not in the many hundreds.......so I built in to be close to represent the ethos of the original build so it ended up with the original Dura Ace derallers and shfiters, seat post and stem and handle bars, and head set it got 7400 brakes, levers and crankset and I put a sanshing hubbed, Mavic 330 tubular wheelset on it (spec was dura ace GP4 tubular but it had dura ace MA40 clincher when I got it) flyte titanium ok substitute for turbo
this is how it turned out
this is catalog
this is catalog