Tim, I bought a Schwinn World Voyageur from you a few months ago, a project nearing completion. They were spec'd with Shimano Crane GS rear derailleur and Shimano Titlist front. The Titlist seems like it would work well for your Proteus. Suntour Cyclone wasn't introduced until 1975, so they would be just slightly off for a 1973 bike. Thanks for all your Miyata One Thousand help on the MiyataSpecTour list!~ Best Regards,
Tony Winters in Center Moriches, NY USA
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