I have become sufficiently jealous and inspired by this thread. The CL search begins!
A couple questions: Does anyone have experience buying a lone frameset and then a complete groupset? Of course it depends on the frame, but for vintage roadies what do you look for in a modern groupset? Also, I see a lot of threadless headsets in this thread. What is the general era that these start to pop up? I've never had one on a road bike but I think I'd like to for modern stem and bar combinations.