Follow this. If you can, evacuate the air conditioning, it will save you a lot of time and frustration. You remove the vacuum equipment and battery. Disconnect the AC, 5 nuts from inside (look at my pic of it off to see the position) and it comes out very quickly. If you do it leaving the coil in, it can add well over an hour, or more if you have difficulty getting things apart. I did it just to try it. I won't do it again.
http://www.powerstroke.org/forum/general-6-0l-discussion/387377-head-studs-how-pull-c.html
http://www.powerstroke.org/forum/general-6-0l-discussion/387377-head-studs-how-pull-c.html