I have some NOS 8-speed Shimano bar-end shifters that work in friction mode - the left side can do 3 chain rings. I can't think of any reason not to use them on the Miyata 1000. It would not be period correct for a 1983 bike, but they are what I have on hand to shift a 5-speed freewheel. Down tube shifters are not an option at my age. I need all controls on the bars. BTW - I got my VO Porteur handlebars today.