Rich, the head is one I casted from B'arin Apma - the black-armored Mandalorian from the EE boxed set. I believe Clint has the head available in his shop now. In original Hasbro paint, the head is *very* "baby-faced." I added some wrinkles around the eye-corners and the forehead and gave him a goatee. Giving him some grey hair, as well, helped to "age" the face. He ended up looking almost dead-on like a dozer operator I worked with several years ago - who also happened to be a Star Wars junkie! Gotta love serendipity.
As the pic was loading, I was giggling and saying, "Hey, I know that guy!"