Need opinion on this motor please........

I have access to a few motors of the following specs.
Would these work well for a CNC retrofit on a small Shoptask?
Thanks,

I belive these are DC Servo Motors

Most of these figues I have no idea what they mean:
MOTOR SPECS:

1) MOTOR Kt: 42.43 +/- 10% OZ-IN

2) MOTOR TERM. RES.: 3.56-4.82OHMS

3)MAX TERM VOLTAGE: 90V

4) MAX CONT. SPEED: 2900 (NO LOAD)

5)MAX PEAK TORQUE: 450 OZ-IN

6)MAX PEAK CURRENT: 11.8A

7)MAX CONT. STALL TORQUE: 105 OZ-IN

8)MAX CONT. CURRENT: 2.7A

It has five wires, which I assume are two for the +/- for power and
two for the tach, with one left over(ground?)

Can I use the GeckoDrives for these and if so, which ones.

Thanks