I'm working on a restore and upgrade build for a friend. I picked up a Miyata 710, maybe '86 or '85 (extra bottle brazons) and I'm cleaning and swapping parts. It was very clean all around.
She'd do better with index and barends than the stock friction and downtube. I haven't done this kind of upgrade yet, so I need some recommendations on the direction and combination of parts. It has a stock Suntour 6-speed and a Suntour short-cage Cyclone. I'm willing to swap this out for Shimano if it would make life easier for myself, and her future maintenance without me around. Budget is tight though, and I'm already leery of the cost for new barends.