Y axe nema 23 mount for Ender3 PRO.
Use GT2 Idler Timing Pulley 20T W6 B5.

UPDATES:  
The updated version includes the following features:
Base is in two parts for easier disassembly
the base is even more easy two install than the previous version
a new part heatsinkDeflector.stl for better heatbreak cooling
dimensional adjustments
option to mount a cable chain (can be mounted on BASE_part2.stl)
better cable management for the heater and thermistor
assembling instructions with pictures in pdf
TESTED ON: TEVO Tornado , feel free to modify for your printer (there is a .step file attached)
Use the 2.6mm version of the base for carrier plates that are approx. 2.6mm thick and the 3.1mm version for thicker carrier plates (the 2.6mm version is apparently a little too loose, I'll try to fix that within a few days). Please write in the comments if anything is too loose or to tight, also, please specify which printer you are using and the thickness of your carrier plate.
I've only updated the E3Dv6 version. The version for the Volcano hotend will follow shortly. I've taken the previous version…