Nice models ! They're a little bit high on the polygon count though (the second one has four times as many polys as the massive armor

). I guess there's lots more hairstyles available from The Sims community, but I didn't know the authors were ok with porting them to other games, since I've never seen them in F3/NWN2/Oblivion.
Adding them to the CC is a two minutes job, but you're treating the models as pure helmets, without using the hair shader, so changing the hair color can give strange results

A simple edit of the diffuse and tint textures can most likely fix this, but I'd understand if you don't want to get into the heaps of "chargenmorphcfg.xml" compatibility issues that go with adding stuff to the CC.
You might want to open the .msh files in the toolset or a GFF editor and change the NAME string, otherwise NPCs using hf_har_hc3_0.msh will be seriously bugged.
Still, good luck with this.