Ignition Coil Bracket - Broken Bolt

[Damien8086]

I am in the middle of replacing my distributor, ignition coil, wires and plugs and noticed when I was removing the ignition coil that the bracket was only held on with one bolt rather than 2. After I removed it I could see why, there is a broken off bolt stuck in the hole.

I have tried a few different things to get it out. I tried using a screw extractor and that didn't work. I tried putting some POR-15 epoxy on it, let it harden, and then I made a slice in it for a screw driver, but the added epoxy piece just ended up breaking off. I also tried something similar using JB Weld, but got similar results. I also tried drilling it out, but I don't seem to make any progress.

Any suggestions on how to get this thing out?