Be careful on the age of the barfeeder.
There were several different versions and your lathe may not work with what you found.
Older bar-feeders came with a standalone servo control box in the bar-feeder.
The newer ones use brushless motors and the CNC drive the bar-feeder motor directly.
If your lathe is already brushless, that's the easiest way to go.
If the old bar-feeder comes with lots of docs, this might work.
Otherwise you may need to talk to your dealer.