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

That torque converter has a balance weight already welded to it and the flex plate is designed to be used with a converter with no balance weight. If you spin the torque converter 180* the bolt holes will line up but of course then the balance weight will not let it pull up close. You have ordered the wrong combination. You can cut the weight off the converter and spin it 180* and it'll bolt up but the question is, is the flexplate you have correct for the engine you have?

The reason you have to spin it 180* to get the bolts to align is one of the bolts are offset. That's the way all Mopar LA's were.