3040Z machine spindle upgrade/modification

[carebare47]

The spindle mount is an extrusion that you can remove and replace with a carrier plate and bearings housings.
The bushings pushed into the extrusion can be removed without losing the ball bearings.

Hello,

I am on the verge of buying one of these machines too, but as far as I can tell the motor doesn't look too great (looking at machines with 230W motors). I almost purchased the machine when I realized that the spindle mount looks integral to the Z axis. I am a complete mechanical engineering noob. Would you mind breifly expanding on how you would go about buying/creating a mount for a bigger motor (65mm or 80mm)?

Also, I don't suppose that you/anyone here knows whether the extra weight of a bigger spindle (2KG extra for 0.8KW, 4.5KG for 1.5KW and 7KG for a 2.2KW), would be too much of a problem? I'm very new to all of this.
Sorry if I've hijacked the thread (seems to be along the lines of what the op was asking though).

Thanks,
Tom