Guy there's no head gasket but to resemble you should lap the spigot to the head with some fine valve grinding paste.,ie smear a bit around the spigot (rag down the barrels if the piston is still in there), sit the head on at about the right orientation, give it some backwards and forwards turns until the mating surfaces look evenly grey indicating smooth even contact. then clean it very well. it doesn't take long. then bolt together tightening head studs with double spanners evenly until 'very tight'.
you don't need anything between the surfaces but to calm my nerves once i used some copper head gasket spray adhesive as it was on the shelf. but not necessary.