help needed on an old boss mill

I have an old bridgeport boss mill(not sure of the number) it has 2
iic 26lbs servo motors with tachs not encoders, The head was replaced
with a series 1 clone which works fine....I would like to know where
I can find the parts or kit and information on how to turn my mill
back into a cnc mill....the ball screws are good-n-tight...no back
lash (It is better than the mills I use at work...lol)any help I
could get would be great! thanks to all!