Great looking bike, and great resto job. I've always had a love for Concordes, and I finally was able to obtain one last week. Still waiting on a bunch of parts for it. I'm really excited to build this up.
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Probably not, but Ebay is a good place to look. They pop up quite often. In the US, Craigslist is a good place to look, I don't know if you guys use that, or something similar in Europe?
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Great looking frame. That would be a fun build. I'd just build it temporarily with the XT /LX bits and just keep an eye out for decent priced XTR stuff to swap eventually. Older DB's had far too much rake in the steering for my taste. The marzocchi may quicken your steering, but it would...