You can do it yourself with little time invested. Skin out the head as best that you can. Use a deep turkey pot and a box of kosher salt. Boil the head for approx. 5 hours, be careful not to boil it to long or the teeth and nasal bones will fall out. Remove the head and flush it out with a water hose. Use a coat hanger to scramble the brane, nasal cartlidge and remove. Flush again with a hose and you done.