Need a way to remove a broken stud

[bcracecar]

I am trying to replace the clutch master cylinder on my 93 GSX. The stud on the left side broke, so I need to remove it and install a bolt. What is the best way to get the broken one out? does anyone know if this is press fit or welded? Ideas or suggestions?

So, it turns out that it was welded on. I ended up taking a cut off wheel and made the stud flush with the firewall. Then just drilled it out. Hopefully I can get this damn master cylinder on there today now so I can drive the damn thing.