SFI flex plate Question

I also have one of those TCI Flex Plates. Nice piec. I also have one from PRW that is drilled for both 5/16 and 7/16 bolt holes. It seems like a nice piece also. substantially heavier than the TCI plate though.
The only thing I am not certain of, is if these interchange between the 904 and 727. -Mine's a 727

PRW 1844010: Xtreme Duty SFI-Rated Steel Flexplate Small Block Mopar | JEGS

PRW_Flexplate.jpg