Mori sl-3 retrofit

I'm looking at buying a 79 mori sl-3 lathe with a yasnac 2000 control.

Does anyone have any experience with this machine?
Are the drives analog input?
What does the turret use to determine position?

This should be a much easier retrofit than the Mv 35/40 I did last year as long as there aren't any snags.

Thanks
Cory