[dachrist]

...how did you deal with the welded on nut that is attached to the exhaust header side?

When removing the exhaust for my IMS replacement job, I snapped off all the nuts on the exhaust flange to header connection. I was able to remove the one bolt that goes through the welded nut (the one that is on top of the triangle). I want to replace everything with new SS hardware, but not sure how to deal with that welded on nut? Air hammer? Dremel? Just want some ideas of what worked or not worked.