Hub centric rings can be used. But! from memory, isn't the S2K hubs bigger by about 2mms at the front? The rears should be same at 64mm. Any decent machine shop can machine out a pair of the rims to sit on the hubs if that's the case!
pretty sure the rears aren't the same man as they don't sit on nice and flush with the hub.
gonna go down to a tyre shop tomorrow and suss it out
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