I don’t want to add confusion to an already confusing subject, but should the motor side of the bracket mount to the inside of the rear boss and front side of the front boss? That would move the mount about 1” forward which is about the distance it is off. I have no idea what mounts there are. I do know I have run stock 340 mounts on a 360 block with no issues, not sure it would be an issue. Like where the red lines are
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