I just finished adding a 3 axis DRO and an X axis power feed to my 42 year old Jet 8x30 milling machine (Made in Taiwan). I really should have done this years ago! I mounted the X axis scale on the front using the T slot, then added an alloy T track to the backside of the table for the limit switch end stops. 3D printed parts include the Z axis sensor bracket, the mounting plate for the relocated one-shot oiler, and s pair of wiring looms to organize the cables. The power feed required a LOT of machining. The bevel gear had to be re-bored, the dial shortened and bored out, the handwheel cut short and bored to 1", the milling table drilled and tapped to fit the kit's adapter plate, and (the scariest part) a longitudinal hole drilled and tapped in the leadscrew. I still have full travels, but did lose the Y axis stop track, which I never used anyway.