lexus/mark levinson speakers

I have a 1991 Lexus LS 400, and recently purchased a set of '02 Lexus SC430 speakers off ebay, and wanted to know if anyone knows if these mark levinson speakers will work with my factory pioneer amp and hu?

Thanks,

lexnfx

Sure they'll work as long as they're the same impedence as the factory pioneer speakers were.  Only way to verify that (unless they say so directly on the back of the speaker's magnet) is to use a multimeter to check for resistance across the positive and negative terminals on the speaker.