Trying to figure out all the Mesa cards and stepper drivers for Clausing Kondia

Im modernizing a Clausing Komdia fv-1 it has a dynapath cnc control. The dynapath computer is old and has issues, and the stepper motor drivers/power supply are having issues as well. I wanna look into getting a modern driver for them that can work with a linuxcnc computer. The stepper motors are baldor motor big mho 4201990, its a 39amp peak 120v 40v/krpm 2500rpm and the encoder is 1000l im guessing thats 1000 ticks per revolution. Im also not sure what connection type i should go with i see the main 2 mesa baords have either ethernet or serial

That machine uses servo motors not stepper motors. (Probably using analog commands between the control and the drives.)

What Mesa cards do you have. To reuse the original drives you would probably need a 7i77 Mesa card or similar analog servo control card.