This would be good conversion... In fact I just picked up a 49cm Univega Viva Sport.
http://www.craigslist.org/eby/bik/70518589.html
There's at least another couple of us riders in San Bruno. When you've got yours
built and converted you should join us for some fixed riding and keep May 21st open for
the SF Scavenger Scramble Alleycat.