Are all 5.9 Magnum flex plates the same? 904 install issues.

Brooks James said
If you find a 904 to Magnum B&M flexplate new, reasonably priced, pls let us know
It's been discontinued, however I heard that Mancini has some

i agree on the B&M one. also Huges engines showes a magnum engine flex plate for sell, but they dont show a picture of it