DeviantART member sup3rs3d3d creates impressive sculptures of superheroes. He's made a few of the Hulk, both Lou Ferrigno's TV portrayal and that of comic book artist Dale Keown, as well as sculptures of Magneto and Juggernaut.
This Wolverine head is made of castilene, a synthetic sculpting material. I'm totally convinced. Clint Eastwood is 83 and he'd still be an awesome Wolverine. As you can see, Eastwood could just reuse his old lines:
Should link the artist's site for reference and for people to view the other sculpts.