Mendel 90 lead screw z-Axis upgrade

upgrade for trapezoidal nuts for faster z-axis movement. Works great.
I used these steppers with integrated trapezoidal rods.

https://alfa-tech3d.com/en/motor/nema-17-with-300mm-t8x2-leadscrew-and-nut.html

You can find the x-carriage in the picture here:
http://www.thingiverse.com/thing:1567496

Update1: Added Solidworks sources

Step Files can be provided if requested