Yeah that is where I am at. The header is out of the car and I'm trying to cut all the studs that are spinning. The struggle is getting into the top header space with the Dremel. I'll keep at it. Thanks.
Do you have the flexible cable adapter for your dremmel tool? It works way better in restricted space. If you are not already doing this, concentrate on splitting the nut. Once you have a cut through one side of the nut,it backs off easily.