I think there was one as well, but it may have been made by Quarker.  If that's the case, when they removed the V3 hair from their store, they likely took down the V4 fit morph for the V3 hair.
For now, the best you can do is use the prop hair and scale and move it to fit V4's head. :)

@ Anthanasius
The original Radiant Jaguar hair was only for V3, and this is the place to ask for this type of fit pose, or where one can be found.