Precix Retrofit Project

I am decently new to the building of CNC's. I successfully built a smaller 4x4 machine that I also had to retrofit, but that's for another time.

With this, I just picked up a Precix CNC machine from a local sign shop. I came across a forum that did something similar to what I am after, but mainly looking for more input on the wiring and new retro components. I will need. I have a photo showing the overall machine when I moved it (about a week ago from this post). With that, I started taking photos and removing the components I knew I needed replaced. Those would mainly be just the computer and components they had in there for the computer (motherboard of the PC, RAM, and various input items such as VGA plug-ins). All other components, such as the amplifier, power supplies, relays, and motion cards, are all still in the computer box if you will. 

I have various photos of the internals as well as the spindle and axis motors. I can share those once I get them uploaded.

With that, I have heard of the Mesa cards working with the DC servo motors and amplifier my machine has. Looking into pinouts, wiring diagrams and other items I may need to complete this. I have a spare PC I will be using LinuxCNC on to power it and bring it to the modern world. 

Any help to work through this would be greatly appreciated!

A picture or part number of the motor drives would help
determine what interface hardware was needed.