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

Turn the flexplate 180* The bolt holes should line up then.

As others have mentioned, since the converter has weight on it, you need a neutral balanced flexplate.

The flexplate you have is for a neutral balanced converter/360. B&M saves money by cutting the weight out of the OPPOSITE side instead of adding weight. (They use to add weight on their old flexplates.)

Oops, didn't read fishy68 post all the way through!