just got my new 1.33Ghz T-Bird today. I have not pushed it to the limits yet, but it runs stable at 1.6Ghz/145FSB/1.8V @ 17C idling (20C ambient). It's really pushing my 156W TEC to it's limit. Looks like a Drift .8 is in order here.
My cooling setup is here:
http://members.tripod.com/anthony_emtp563/