Ok, it seemed as if I had an exhaust leak towards the engine, so, with further inspection I noticed that the flange with two bolts that attaches the exhaust pipe to the exhaust manifold was loose. So, I sprayed the bolts with penetrating fluid and let it sit for about 24 hours. As soon as I applied a little pressure, the bolt broke. I tried to get the bolt out of the exhaust manifold but, it is stuck. I called the Jeep dealer and he said I would have to bring it in and let them drill the stud out of the manifold because it was pressed into the manifold from the factory. Is this true? Or, should I be able to drive the bolt through with hammer and large punch?