David Banzer bought out the remaining stock of Willow chainrings a couple years ago. He has a few 130s left, but I have a feeling maybe only 48T and 49T. I bought one of each and am currently running the 49 on my first-gen Dura-Ace crank. Note that he may also have a Willow tripleizer if you're thinking of going the triple route.

https://treetop.bigcartel.com/catego...w-chainrings-c