Got this assembled and working. Makes the P2 a very large machine. Parts were well packaged and in perfect order. All cables, belts and extra hardware were included.
Cable management takes some thought and I burned through a lot of zip ties to get this where I wanted it, but it all worked out.
Instructions are sketchy, but you'll get the gist of it and setting it up in Lightburn worked great.
A few notes:
1. The Y axis shares a stepper, so you have to make sure the left and right mounting plates for the X gantry are aligned prior to belt tensioning. Otherwise, things don't fit and you'll be out of square.
2. The X axis cable provided requires the removal of the extension cable fastened to the X gantry. The cable ends are different and that set me back a second until I realized how to get it done.
Very pleased with this and my P2 33w. Just a great machine.