Does anyone know in what books I could find info about San Francisco post Saito?

I don't know of any yet. Hell, they didn't go into details as to why Saito buggered off in the first place.

There are a couple of books that speak directly to San Francisco:

1. Neo-Anarchist's Guide to North America – This old book (game date 2050) has a section on San Francisco. Good luck finding a copy.
2. California Free State - This has an extensive section on San Francisco and the Bay Area. Game date 2057.
3. Year of the Comet - You can get this one on BattleCorps. Game date is 2061, and a few pages cover Saito and his takeover of the area.
4. Shadows of North America - Also on BattleCorps. Game data is 2062, and it has a section on California Free State and has a few pages on the current status of Saito and the San Francisco area.

The Corporate Enclaves sourcebook covers Los Angeles in some detail. It does have a few mentions of San Francisco, but nothing really significant.

If I had to pick, the most useful one is probably California Free State, if you can find a copy. Gives the most information, and has the Japanese occupying force. You'd have to extrapolate into post-Saito conditions, but you'll have to do that with any existing sourcebook.

Thanks guys. Now I have someplace to work from. Need to dig out my copy of Shadows of North America.

Right, SoNA is the most current for what's going on there now but for lay out and such, geography etc. the CFS source book is best, though I have a soft spot for my old Neo-anarchist's guide.