Which forks for a cyclocross aluminum Guerciotti (ALAN)?

You can put a caliper brake on the fork but you'll still need to use a cantilever on the rear as as far as I can see from the photo, the rear brake bridge has no hole for a brake bolt. It will look a bit odd but should work.

Doesn't look that odd here :) :)

http://www.flickr.com/photos/xenotropic/6198237467