Creality appears to have a rotary, but it's not listed on the US site at this time. I picked up the Dewallie unit below and it works great with my Laser Falcon 10W. I have to lift the whole frame with risers, but it seems like you could just lift the Z axis on an E3v2 to get the same taller Z offset.
The laser unit for the E3v2 looks like it only uses the X and Y axis motors, like a regular laser engraver, so you may need to manually spin the Z motors to raise it to an appropriate height. Disclaimer: I don't have the E3 laser mod kit, but I studied about it a lot before buying the Laser Falcon. Hopefully someone with the E3 laser kit will chime in with their experience.