just opened it up and the motor is 180v and 4800rpm so a little slower than I was hoping for. Driver board looks quite compact and control panel is fed from one muiti core wire so shouldn't be to difficult to hack the speed commands.

On the down side it is 10mm to big (diameter) to mount on the existing motor plate so to use that motor I will have to make a new mount and move the motor position over to clear the top of the quill. Looks like I'm going to have to have a go at rewiring the AC motor for 240v and fire up the vfd.