Wasn't Sonic Youth one of those annoying chronic name changers/blog deleters? I think they were also called Vidcunds and some third (fourth? fifth???) name at some point so tracking their stuff down can be tricky. :/
Here's another conversion of the same hair (although maxis match textures) and additional
lower poly edit of the mesh too but I can't seem to find Sonic Youth's version either. There is one post with some of their files reuploaded
here but on a quick glance I didn't see this particular hair in the folder.