This is the lowered Y motor mount for the Zonestar P802 variant printers.
I recently planned to change the acrylic bed carriage with the aluminum one, but the motor seems too high for "square-like" aluminum beds; so I wanted to make the motor lower in order not to make it hit to the bed.
I actually didn't install it yet, so the measurements might be a little off - but I upload the FreeCAD design file here too, so you can manage to make the motor lower if need be.
PS: I've installed the part and it seems it works OK; however the screw holes are shorter than the old one so you might want to use a bolt/busher in order to compansate for it, or use shorter screws.
Also noted that when the motor is installed, there is 5mm gap between the motor housing and the bottom "pad" part. If you make the padding 5mm thicker, it can be used as a support for the motor too - I will update that version this evening.
I generally use ABS so 15% is enough but you might tweak it if you want.