That looks really tasty! I've made salceson with tongues and hocks only but not with the actual head. There is a butcher shop that sells heads, however I've never worked with one, for the simple reason, that i have no clue.
What do I need to do to prepare a head? remove the eyeballs, brain, clean out the ears/snout?
Perhaps some experienced "head cookers" out there can give a quick tutorial, with pics if possible, on the process?