I can't answer your question, Esther, but if anybody is interested I made versions of Quarker's Silky Long and Grace Lion hairs which conform to V3 and V4. The originals where prop (.HR2) format - leter Qurker hairs did conform. Of course I can't redistribute either geometry or textures, so you'd need to own the original hair.

I attempted to contact Quarker when I made these add-ons, in case he was interested, but I never heard back.

The store staff would have a Real Life contact for him, and may be willing to check on your behalf.