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

Convertor was ordered from Hughes. They swear it is for a 904, Part #27-30. The flex plate B&M from Summit. Here are some pictures with the flex plate rotated 180 degrees. I have also spoke with the gentlman that did my machine work. It is a externally balanced 360. I am leaning towards going with the factory flex plate, as it fits perfectly on the Hughes convertor.