Got 'em out with a bolt extractor. Thanks Geolab! Ready to remove the carrier and motor mounts tomorrow. Now, time for a single malt.

 

Paul,

Sorry to hear of the your troubles! The boys at FD Motorsports helped me out with this job a couple of years ago. We didn't encounter any issues taking the bolts off. As the others have said, putting them back on after the gusset gets welded on requires small hands and a lot patience (hopefully not a lot of swearing). Good luck!