The wheels are 80's Dura Ace ( those aren't decals on the hubs, the words " Dura Ace " are engraved in ). In the 80s Campy freewheels ( it's not a cassette ) were compatible with Shimano. When last used about 20 years ago those gears did index. Any more verdicts on the 20+ year old drivetrain? I feel sure they're higher than Chorus and Athena at that age.