Ender 3 Max belt driven bowden mod

Seek solution for Belt driven Ender 3 Max bowden but not found satisfied one for me, so I start to use my brute design skill to do what I can do :) Forgive me if the design seems rather not clean.. but for me the function that matters.
Im Edit bottom part using 20T idler one
Include here only Left gantry part and bottoim one, other part can refer to original and or other remix one ( I use remix one on top part)
For belt I use 220cm for both left and right but slightly not long enough so the tensioner mostly outside the place (Im using longer screw rather than buy another belt). So If you want to do the mod better buy longer belt (230cm or longer to be safe, add another 10cm for both)
I use BMG clone extruder so filament sensor need to be seat on another part I mod:
https://www.thingiverse.com/thing:6417637

Actually I almost put the thing on the mod but after rethinking again it maybe make difficulties for future upgrade.I leave it still on 2 parts then :)
As mention on origina