3.2 should be easy enough on that chip, mine was running fine at 3.8 and was willing to go higher.
You have to set the ram to run as slow as possible which I think is a 1:1 ratio, this is because the chip has a low multiplier and you have to run the system bus pretty fast. I think you have to set the PCI bus to run at 100. At 3.2 you probably don't have to make any other changes. (It's been a year since I worked on mine so I might not remember it all.)