Need Alpha Autopilot Motor

[Fisher34]

The drive motor in my Alpha 3000 autopilot has just failed and I've been advised that both the motor and the drive head are obsolete and no longer available and that I need to replace the entire drive head.

Before I go this undesirable route I wanted to see if anyone had a spare motor or older Alpha drivehead. My drive head is a model SGU-164 and the motor is a Pittman 12VDC, model 13103B860.

Thanks,