yup. just soak the studs in PB blaster for a day. I never let the combustion side of the heads touch the ground, flip the head/manifold upside down and loosen the manifold nuts. those dont take much effort.
the two collector nuts are the hardest. I finally got them loose with a 600 ft/lb air torque wrench. would not budge until i soaked the 2 nuts in PB blaster for a couple days then came off fairly easy.
also.. unbolt the 4 bolts (soak in PB blaster) connecting the back of the cat to the muffler pipe... easier to get the head/manifold on and off.