dizzy compatability

I've been looking for a distributor today for a '93 1.0l, but all the ones I've looked at have a slightly different part no. on them, basically the number on the dizzy I have ends in B02, and all the ones I can find end in B01, B03 and B04, I'm just wondering if they are interchangeable or it has to have the same part number.:confused:
 
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