A500 flexplate ?, Maybe issue.

I bought a b&m 10230 flexplate. It's supposed to be for an internally balanced small block with multiple patterns for the converter. However, I just took it out of the box and installed it and noticed that there's holes cut in it. I find this odd? Doing more research on finding it's for an internally balanced 727 and I'm not sure it'll work on an a500. Any insight? I find the holes odd.

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