I've got a deal. I'm so anxious in building this bike, I went online to order some hardware starting with a headset. Until now I bought frames with headsets on/in it. This one, as with the Colombo I bought a few weeks back, has no headset. What is the thread type of these italian bicycles? Can I order every 1 inch threaded headset available? Stack height might be something to keep eye on? Sealed bearings another one? What else?