You'll find some if you look on Craigslist. I did, and there should be a few. It can be done: http://boulder.craigslist.org/bik/1896763186.html - It's a pretty cool bike, but it a TT bike, so...

That's not what you want. But the bikes would be a tad old, so it wouldn't be particularly stiff compared to today's bikes. Especially the Kestrel, God, I wonder what sprinting would feel like on it.