I go for original or with period and make correct components. I purchased my Legnano Grand Premio as a frame/fork set. I built it up with what I had that, at least, looked the part. But as time went on(several year now), I added NOS Legnano cottered cranks and bottom bracket, Legnano embossed head set(still to be installed), Legnano Pantographed Campy High Flange Record hubs laced to 700c clincher rims, and a Campy Record transmission.

All of the above elevates my GP beyond the components offered at the time. But all of the components are pretty darn close in vintage and obviously Legnano, so it works for me. The clincher rims, incidentally, were swapped for the tubulars that I tried for a while. The bike still sports its patina and I still resist the urge to paint. Anyway, getting closer with my hut for this and that. I really enjoy the hunt for the next needed piece...