Yup, that's what happens when Holley acquires someone. Holley Shuts Down Iconic Hilborn Brand After 70 Years
Very cool piece, though. Tough to get parts for, but like rmchrgr said- they've been converting them to EFI for years now. I'd have snapped it up, too- small block Mopar units are tough to find. Don't know what I'd use it on at the moment, but it would have a place of honor in my office!