Heads look different from what diagrams say.

[soundguy]

I got the engine torn down to just the head on one side to remove (the one actually bad). All the diagrams I've seen show 8 bolts holding it down and sequence to tighten them. This one only has 4 , 1 on each side of a chamber. What's the deal here?
Also , it looks like the air compressor needs to be removed to get to a bolt on the head, has everyone needed to remove this to get head off?

 

[soundguy]

Hehe, NM on the bolts. Feeling real stupid and noobish atm. Was expecting to see all 8 bolts in the rocker area, but after finding some blow up pictures on gnttype's guides, I found the other 4 on outside.

Can ya tell this is my first engine dismantal?