aluminum oil pan replacement

A friend has a 92 and has had the engine out once to replace the oil pan gasket. He is a competent mechanic (for the most part). He got it all back together and it leaks worse now than it did before he took it apart. I never saw it when it was out but he is convinced that his cast aluminum oil pan must be warped or bent and he needs a new oil pan. I find it hard to believe myself, but I trust the guy. Does anyone know where to get one other than the junkyard? I've scoured the web and can't find anything other than the earlier stamped steel ones.
 
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