Hey, I work for a ford dealership and we accually do headstuds there at customers request as long as its not under warrenty. I have done many sets of headgaskets and studs and i have never pulled the cab once.. now the 6.4's I pull all the time. The headgaskets on the 6.0 are simple IMO.
Start by removing the coolant degass bottle(2-8mm bolts),
then remove the fan and shroud(2-8mm bolts on top of the shroud then 4-15mm bolts for the inner shroud)
then work ur way to removing the alternator(3-13mm bolts),
followed by the turbo(3-10mm bolts),
then get ur wire harness out of the way,
then move on to the intake and egr cooler(handfull of 10mm bolts and the 7/16 for the cooler)
Then remove the nuts and bolts from the uppipes(2-13mm nuts and bolt head is a 10mm.)
once the intake and egr cooler are out of the way remove the motor mount nuts(4-21mm)
from either one of the sides and use a jack to left the engine,this will cause the engine to rock and make access a lot easier.
Then remove the valve cover from the side that the engine is up on(handfull of 12mm bolts) followed by the oil rail(9-t40 I believe)
then remove your rockers(2-10mm bolts per rockers) then pushrods and then ur ready to remove the head(handfull of 18mm bolts and 5-10mm bolts)
There may be some small things i missed but this should help ya out. The biggest pointer i can give you is do one thing at a time and take ur time. Also (make sure the pushrods are in straight when you go back together of you will have a bend rod and a nice miss) Trust me on this one!! Any questions feel free to ask.
Jared