So pressure test came back and the head is good. They are replacing the valve stem seals and skimming it.@Gusman86 , Understood. Most would have came to the same conclusion that you did, that the head had a crack as well. Hope you get some good news today after the head is Pressure Tested and you get it re-fitted soon!
The head gasket had perished as it was parked up for so long. (27 years) Hope to upgrade the turbo and delete the egr aswell while it's apart.