Window part needed

[Bobcat54s]

Hello everyone,
We purchased an older used TM late last spring that we have been repairing and fixing. One of the front shell side windows was broke out, the window that slides back. My dad has cut a replacement, but the long metal piece that slides over the end of the window, that you push on to open and that curls up as a lock, is missing. The previous owner must have threw it away. Does anyone know where I can get a replacement? I appreciate any ideas or help a can get. I have attached a picture of what I’m talking about.