Well you can always drill it out instead of using the easy out. Just use a bit slightly smaller then the bolt so you don't damage the threads. Once it is drilled out and you have removed the portion that is stuck in the threads you need to chase the threads with a thread cleaner. If you damage the threads you will have to re tap the hole. Think of it this way, whats the worse that could happen you have to upgrade to a good set of aftermarket heads