I was wondering if anyone knows which of the Tubus cargo rack line will fit on a 61 cm Bianchi San Jose?

I am trying to find a bike rack that will fit on my bike. I have been told that the Tubus line is very high quality and strong, but I cannot find an LBS that carries them to see which ones fit, so I'm gonna have to order on-line.

Any help from someone who has a San Jose with a rack or just knows, would be much appreciated.

Thanks in advance,

Ralph