Citroen xsara 1.9d x 2000, can I fit other Citroen radios into my car?

What type of Citroen radio/cassette( I don't have the part number) can I fit into my Xsara, I have looked on Ebay and their are not many available for the Xsara, would one from a Xantia, berlingo, Zx, Saxo, C2, C3 fit my car, any advise would be appreciated.
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