Done...didnt break any of them and they actually werent that bad. It did take 6 hours but thats because I let them soak. I cracked them 1/4 turn, used carb cleaner and let sit for an hour. Another 1/4 turn and let sit for another hour. 1 turn and let them sit for another hour. 1/2 turn and went to store to get new plugs (drove the wifes 00 Vert, God to I hate the squeak in the front end and the idiot that owned it before us for not using progressive rate springs when he lowered it). Came how and just finished removing them all. I did use anti-seize on the new ones (Champion were the only ones that were single piece) and installed them. Cleaned the K&N while I was doing all the waiting. So tune up complete....time to take her for a test drive!