I tried to make a full face helm of the wolf mask, this is about as far as I got: http://llamahunter.homestead.com/files/helm1.jpg
I just took the wolf-head from the pauldron and scaled it to fit over the face. I ended up losing interest in it when I couldn't help but think it looked like a fox more than a wolf, and ran out of steam when trying to make it open-faced instead. Maybe you can get better results. ^_^
I actually started getting somewhere after lopping off the wolf creature's head. Then I realized it was animated, and I didn't know how to make it "stick" in the open mouth position. After some ES searching, I stumbled across http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=3342 by dongle. The third wolf variant .nif has the wolf's jaws in the open-most position. Very promising - unfortunately, I am unable to use Nifskope to further segment the mesh (and thus remove some parts so that a character's face would be visible beneath it. Ideally, I'd hope for a helm that looked like the bear armor's helm.
I also took another desperate look through the CS disc, and considered the Imperial Chain Mail helmet (called a "coif" in-game). I really like the almost hood-like effect of the chain coif, but not so much the steel helmet. Unfortunately, it's all 'made to fit' and I didn't have much luck using just that coif/hood mesh on a different style helmet (say, the nordic fur helm). =/
Just ideas I had... but nothing I can really follow up on.