I have been looking for some time. I cannot find a picture of one, let alone one for sale. I am usually pretty good at locating the obscure, if only in images, but I am coming up short. Does anyone from back in that day remember if they were a thing? I seem to remember seeing a pruned 4-71 on a 241, so that might have been a one-off adapter. Before I fire up the mill and make a big giant mess, does anyone know if this animal exists?