Based on this model by Passat250.

I shaved the top so the fan shroud wouldn't smash into it during homing.

The spacer is in case the Z-axis carriage clashes with the back of the drawers. You can use this spacer between the back of the drawers and the vertical Z-axis extrusion. Note that if you do this, you'll probably need to trim the V-slot insert sections on the front, by 5mm. Otherwise you may not be able to reinstate whatever was mounted on the front of this extrusion. I did this with the blue side-cutters, no problem, on my Ender Extender converted Ender 3.

For the main housing, print this with the openings facing down and use tree supports. This may not seem efficient at first, but I promise, I have tried multiple orientations and this is the best one for sure.