I have a 2006 Durango 5.7 Limited with 2 broken exhaust manifold bolts on the back of the passenger side manifold. I have gotten the manifold off, sprayed the broken bolts with pb blaster, and drilled a hole in the broken bolt for a bolt extractor. I tried to extract the bolt and it's not budging. I am using so much force that the extractor is bending to the point of breaking. I have tried extracting it after heating up the surrounding area, heating the surrounding area and the bolt, and no heat at all, and no luck.

Any ideas are greatly appreciated!

Picture are below