UPgrading CNC 3 axes  24x36x5’’,

Hi, my cnc is a old china 12 years old. 3 motors nema 17, 3amp, 1.2nm, ballscrew, 3 stepdriver ms-2h057m,
breakout board 4axes mach3 usb motion controller, spindale 1500w water collant.
I did clean  the surface table, change the breakoutboard, I’D like to change the motor nema17 for nema23 to improve the machine. Is it a good idéal?, also change the stepdriver. There so much difference choice, i do not know which one to buy. I need to know what motor to buy, what stepdriver to buy and the reason why?
Thanks to everyone

I need to know what motor to buy, what stepdriver to buy and the reason why?

I would suggest you go to the Gecko site and read about the different components for a cnc machine.
Only you can define what you want to do now or in the future with your machine.

RICH