i have two boxford tcl
the first and all original, driver transformer, capacitors, wires, etc.
we have only replaced the original card, created with the same fixing holes, a slightly modified mach 3,
the lathe did not have the cnc turret, I found 2 photos in 2d, I processed them with solidworks and I created a cnc turret, made to make the pieces in china.
added a 3 amp driver and the turret turns, all ok

the second cnc lathe had already been retrofitted, they had removed a large amount of the original system leaving only the spindle driver and motor, transformer.
the retrofit had been done by the old owner but it didn't work, it had some bloblem bugs,
with an experienced friend, in 2 days to solved. had to study all the previous changes and find the errors.
now it works fine.
front panel disabled, only emergency button works.