Exhaust studs with headers?

Well, ****! I tried 3 times to weld a nut to the broken stud. It breaks off every time I try to turn it with a wrench. Hopefully I can get a drill and tap in there so I don't have to pull the head. Why does this crap always seem to happen to me? Haha...

Don't be surprised if you end up having to helicoil it when it's all done. I had a stud break off. I drilled it, but the bit walked in the hole enlarging it. So I had to step it up a size and heli coil the hole.