Hole pattern Z-plus front?

I’m currently running an AMB 1050 FME-P spindle in my standard-size belt-Z Shapeoko. That spindle has a standard 43 mm mounting flange close to the ER16 nut, so it requires an adapter (milled, of course!) to move the tool down, which looks like this from the side:

Now, I’d like to upgrade to a Z-plus, which means milling a new back-plate for this 43-mm-adapter, with cutouts for all the socket heads on the Z-plus. Is there a drawing/plan/model (PDF is fine) for the front plate of the Z-plus?

I’m afraid we don’t have an official drawing for the Z-Plus — it’s symmetrical, so once you get one it should be quite simple to measure and draw something up.