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I will try and see if they are the same. They look similar but I can't be certain if the bearing mounts or belt mounts are in the same place.
Here's some schematics I found (my plate is the same as repraps by dimensions).

anet a8 : https://ae01.alicdn.com/kf/HTB1lTZyRFXXXXbTXVXXq6xXFXXX1/funssor-Y-Carriage-upgrade-alloy-plate-Anet-A8-A6-3D-Printer-Upgrade-Y-Carriage-Anodized-Aluminum.jpg_640x640.jpg

repraps discontinued DI3 : https://images-na.ssl-images-amazon.com/images/I/61uxsgWQaVL._SL1200_.jpg