Did a full head gasket job on my 6.0 (2005 tho) and also had to repair hpop system as the STC fitting blew. I counted no less than 13 o-rings on the high pressure side. There are upgrade parts from dealer like stand pipes and dummy plugs that you will need...also I'd replace oil cooler and upgraded screen that feeds the hpop.
The Hauler - '05 F-350 4x4 CC Dually 6.0 Powerstroke
The Project - '90 Ford Bronco 4x4
The wife's - '11 Ford Escape
For every minute you are away from work...you can add two minutes to your life!