I have a tbird 850 on my epox kta3 motherboard running 1gig @ 133bus. I havnt tried for higher yet as I need to replace the wimpy 235watt powersupply and get a better HSF before I go for more speed.
Also, i used a chemtronics conductive pen to unlock my cpu, crank up the voltage to 1.85, and change the hard multiplier to 7.