That's a negatory so far these taking a 7sp cassette. 6sp Uniglide are freewheels, ratchet mechanism built into sprockets and screwed onto hub. You're after a sturdy pair of Mavic rims on 1055 Shimano hubs which I have at reasonable ££££ lol
jim
With questions like this I've always wondered why the OP didn't simply post basically the same question into Google?
Anyhoo I lost my ceramic bearing, wearn't available from Simano had to buy/order top jockey. well expensive £20 back in '96.
Jim