Was in the scrap yard today and picked up a large stepper motor and I need help in finding out the torque rating. The tag on the motor read as follows:

japan servo
KP88M3-001
3 volt 2.5 degree
code 0608

I know the step angle is more than the usual 1.8 degrees but if I gear it down it should work out ok. What can I say, it was free. Now all I need is one for the y-axis. Any help would be great, thanks.