Wilkinson has them here for $ 23.40 : https://panterapartsusa.myshopify.com/products/04005A
I bought one years ago from Steve, it was a reproduction in stainless steel. Fitment was ok, not quite as good as original, had to bend the wire a bit to make it fit right. He may have originals now after purchasing DeTomaso's parts inventory a few years back. I would check with him.