alright guys, need some advice. I have the manifold loose with only two studs broken off and there is plenty of room to grip them. What is the best way to get them out. I see that some people use vice grips but I've tried that and they won't move. Is it ok to heat them or will that even help? Also, any tricks to getting the studs loose that hold the pipe to the manifold. I've soaked them in pb blaster multiple times and I even put the impact wrench on them and they won't loosen. If all else fails I can cut them and then drill them out but I'd rather not have to do that.