There is a seller on Ebay who has machined rear cogs to make newer hubs into skiptooths. Maybe I am late on this bandwagon, maybe not. I have it in my hands, I put it on a Nexus hub and a Sturmey (a little more effort somehow than the Nexus). I ran in through a couple chains with no problems. There was another listed, but I just bought it. maybe there will be abother soon. The seller is "skiptooth2" and the listing is "Vintage Bicycle Sprocket Prewar Bike Rat Bike Shimano ".