Lathe AC servo spindle motor

Hi everyone. I have made a CNC lathe which works very well, thanks to a lot of help from this group. It currently uses a 3 phase AC motor with a VFD. It only goes forward but I can control the speed in the software and gcode. I am rebuilding the machine, making it stronger and heavier and want to change the motor so I can do forward and reverse, as well and position. I understand it would be setup as C axis like the commercial lathes, but was wondering if anyone has done this, and if its even possible. I am looking at some AC servo motors on Ebay, like this one -

AC20V~80V HSS86 Hybrid Servo Driver + NEMA34 Closed-Loop High Speed Stepper Servo Motor 8N.m 0~3000RPM

Any ideas or suggestions? The reason for the position requirement, is in the very near future I will be adding either live tooling or a Y axis to mill. It is mainly small parts in brass, bronze or aluminium.

Thanks and hope someone can assist. This group is really great.

hi a setup like in this video
its on his page

Hi. Exactly what I would like. Do you do the setup? The link on your YouTube page doesn't work unfortunately

if you got a YT account write him
there is also a homepage with Mail to get direct contact

he is also here in the Forum
with his name