If I get a modern SA 5 speed hub, is there anyway to use it with a trigger shifter that looks like the original 3 speed trigger shifter? I can't find any 5 speed trigger shifters but my search skills may not be very good.
SA makes a bar-end 5-speed shifter for those hubs, which can also be mounted to the downtube. There never was a quadrant-style shifter for 5-speed hubs. Or, I suppose, you could mount that shifter to a brake lever with one of those retroshift mechs.