What is the best way to remove the cyl head studs from the case.Almost ready to have it decked and bored.

easiest....let the machine shop do it.
Or
Double nut them and use an impact gun to remove.

Rich

I hit them with PB Blaster last night should I apply some heat before I attempt to pull them with my impact gun?

Be very careful and just be prepared to farm this work out to a machine shop. Nothing to worry about... really other than money you may have to spend. Any good machinist will tell you...."Remember, anything you mess up I can fix"