Use an 11-34 cassette assuming it'll work with everything else you have, otherwise you're looking at getting the freehub or cassette machined, which probably isn't worth it for those wheels.
as above! not worth paying for milling cassette unless you have a deep affection for the wheels
@Pasty_Spumante started
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Use an 11-34 cassette assuming it'll work with everything else you have, otherwise you're looking at getting the freehub or cassette machined, which probably isn't worth it for those wheels.