Hughes 27-30 and B&M 10239 will not line up.

Hughes needs to figure out how to put weights on without them interfering with round flexplates, like B&M. I don't know of any other name brand converters like that.

Personally I prefer the stronger B&M flexplates over the OEM style "4-ear". I've seen a few OEM style crack, even the performance ones with solid ears.