need some help!
I have an '80's SR semi-pro, has full Suntour/SR everything...I'm tired of the friction shifters and want to go to index shifting. I bought a set of Suntour GPX shifters/front & rear derailluers to do the upgrade. Now I hearing I need to upgrade the cassette to be compatible as well? I want to keep it a six speed...what the best solution? PowerFlo or ??? the hubs are Suntour sealed bearing units.