Ok so as promised, here are some pics of what you are getting into, and as prior mentioned, nothing too difficult, just make sure you have a torque wrench for putting it all back together.
Ok step one is take the valve cover off, also refered to as the rocker cover. Once that is off, you will see something that looks like this. Keep in mind, this one has already been taken apart and I just pieced together for the pics, note the blue zip ties, we'll get to that later.
Next step is to remove the bolts holding the rocker shafts in place. Now the bolts that hold them in place also hold the lifter block in place as well. For this step, just remove the rockers on their shafts. Make sure to take note of any special order to take these off. Haynes manual said to even take note of their specific location, as they are different lengths, but I found this to be false. The bolts were all the same length in mine. It should look like this:
Ok now we come to the little blue zip ties. The lifter block should be loose now, but DO NOT pick it up. The lifters will fall out to who knows where and get mixed up, this is not good. Use the zip ties on the top shoulder to keep them from falling through. The FSM recomends using wire, hey, whatever you have around. Here's a close up, followed by the lifter block out and you can see them trying to fall out:
Thats about it, not too much else, good luck and happy wrench turning.