91-94 Front Lip?

Does anyone know where I would be able to find a lower lip for the 91-94 240sx fastback? I have seen a couple but haven't seen where to purchase one. Do people just have them custom done, or do they by a certain lip and then have that lip fitted. If there is anywhere I could purchase one of these let me know. Or if you have ony yourself that I could purchase, let me know.

Thanks

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