[Bravo]

I am trying to remove the head injectors from the air pump on my 3.0L but they are seriously rusted in place. I have tried all the sprays. Should I try heat. It does'nt look like I can get heat to the left sided ones. What if one breaks? What if one strips? Can I just cut the tube near the muffler and cap or plug the line until I pull the motor? thanks