YZ plate material

Thanks guys,
I found all the info about the XZ being metal in the docs but no mention of metal YZ plates.
I’ve decided I’ll get them done in metal as well, may as well since I can get get them done locally for a very reasonable cost. Its hard to wrap my head around it all without one actually sitting in front of me to look at. It looks like the only difference will not be using wood screws to hold the linear rails on, instead I plan to tap the holes to M3 and use cap screws.

Does anyone know if the current DXF at LowRider CNC V3 - V1 Engineering Documentation is the V1 updated version mentioned here: Minor LowRider v3 update ? (so you don’t have to pre-fit the 3 screws in the XZ plate before attaching the rails to the YZ plate).
The downloaded DXF and images in the above update link show the holes in different locations and different sizes. I want to make sure I get the updated version.

Thanks