Paul,
The routing is pretty much the same, but they did flip-flop holes. I'd have to sit down and think about it to tell you exactly which hole was which because visually they have changed that much. (strategies, etc.)
Conditioning wise, the last time I was there it was far better then it had ever been, and this was during the heart of the Tiger Woods/Golf Course boom shortly after the remodel. Suddenly the course had these ridiculous squiggly bunkers and much of the movement had been changed. They added the lake on #10, you know the one with that wonderful artistic rock wall. Beautiful stuff.
I will say this, the par 3 at the entrance, the one with the two greens came out rather interesting. They added some good chunking material in the bunkers and made it look like Montebello probably once looked back in it's original Behr-heyday.
Did you happen to come across Fernando Valenzuela? He plays there like three or four times a week I'm told, and I have seen him there almost every time I have been there. He lives somewhere nearby too.