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I believe you have to just make sure the axle size is correct, the same as on your bike. Also check the width of the fatboy rim also. I think there is only enough space to run a rim what size up on the sportsters if I remember correctly. Not positive tho.
You won't be able to run the front; it's too big for narrow glide front ends. The rear could also be too wide depending on which year you are talking about swapping.