Great advice, surely appreciated. Just too tight for any accurate drilling, I was able to protect the threads with a tiny piece of copper tubing and mig it very carefully until I got it proud. Then welded old nut on. Came out slick as a whistle...
Finally preparing to install a new turbo kit on my 86 BJ70. The upper rear exhaust manifold stud was laying on top of the manifold when I removed the heat shield. Never leaked a bit. Bad news it broke off a couple threads inside the head. I dont...