EZ Trak Retrofit

Been lurking and dreaming about converting my Bridgeport 2J mill to CNC, but now have the chance to bid on one or two EZ Trak mills at a local auction.
Both are 2 axis/2 HP machines:

One is a complete DX machine that is very clean and I'm sure will be bid up for big $.

The other is a SX that is listed as "missing it's EZ Trak control" (photo attached).
I only know the keyboard and CRT screen are gone, but don't know what's in the control box.
Servos and wiring look to be intact.

My question is, given worst case scenario that I am getting nothing but what you see, what would be the cost to replace the drivers I will need to run the X-Y motors?
Are the Bridgeport motors standard servos that play well with current software, or will I need to replace the original boards?
I would like to end up with a 2 axis machine with full PC control.

If the drives are good, then there are hobby class controllers that are compatible with the drives. You should be able to get the machine running for less than $1000