I was unable to get that broken bolt out. I'm going to pull the stud on the end and put a bolt on there to hopefully compensate for that missing bolt. I'm tearing down my engine to have access to any necessary parts and bolts. I'm also hoping the mounting area will be able to swap between the engines to not have to modify the mounting area on the new one. I also pulled the mounting plate that was welded on the crossmember in order to decide how to modify it so that a socket/wrench can be put on those bottom nuts.