Originally Posted by T-bucket23
Leave it, drill a hole in a more convenient spot and weld a bung in and you are done.
Straight forward advice T-bucket23. Will probably braze the broken one at the top, saving threats to my exh. manifold and install another somewhere before the cat. I've seen enough stuck fasteners to know it ain't gonna be pretty after messing much more with the old one. On an engine stand - could be done while eating a sameech; either removing OR damage recovery.