Edit: ON HOLD
I have some genuine G1 pony hair (mane) for Gusty, which I harvested many years ago from an otherwise baity Gusty.
I will send it for free to anyone who needs it, within the United States. If you're outside the US then I do ask that you pay postage. I intend to put it in a regular envelope to send it.
Unfortunately I do not have a Gusty tail. (Also I don't know if there's enough hair to totally rehair a Gusty mane. But hey . . . it's free.)