[MetroMPG]

That's about what the guy told me when we bought ours. He said the drive motor had just been reconditioned and it alone "would cost thousands" to replace.

That shaft is a little troublesome. Our pump motor had internal splines - plural. has one spline. I know that Jim is going to suggest pressing out the shaft and pressing in a replacement with a proper external end on it.

However... if you're doing a low power conversion, you might be able to get away with using the male shaft stub from your pump and mounting it in a bearing plate.