Originally Posted by kroozer

If you want to put on all or mostly period-correct British components it can get expensive, but many of those bikes were set up with parts from all over Europe. That gives you a lot more flexibility and it shouldn't be too difficult to find some nice stuff for reasonable prices. Many common 1970's bike boom-era components were already in production in the early 60's. My own definition of PC is something that was designed during or before the time the frame was built, even if the actual part I have was produced somewhat later.