I've used these SRAM chains with great success on older Campy and Suntour and Shimano with equal success on 6 and 7 speed index and non indexed drivetrains. They are absolutely delightful on my Campy non indexed bike with a Suntour 6 Winner freewheel. Get them at Lictbike if you can't get them locally.
Garth Libre in Miami Fl USA