Unbolt the exh at the "down pipes". You really can't get to the exhaust manifold/head fasteners with the head on the engine. I unbolted the intake manifold and pulled it out separately. You will want to get the egr pipe out where you can clean it real good. If you look at the vacuum piping underneath the intake manifold you will see one that comes down and attaches underneath the water pump area. Unhook it at the under water pump area end. Do a search - I just did this on the 104 engine not too long ago.