Ran across this on a website for Baby Beef, a Churrasco in Brazil I was at years ago. They didn't have it back then. Google search found one place that has it. Ferry Farms in Michigan. Sounds interesting, anyone ever had it? Found it anywhere else?
https://www.ferry-farms.com/collections/pork/products/pork-picanha
https://www.ferry-farms.com/collections/pork/products/pork-picanha