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Looking at replacing the lower case for the 15" Retina Late 2013, will a 2012/early 2013 lower case work?

I’m trying to find out the same thing. I’ve seen parts both here and ebay listed as being the same part, but I’ve seen elsewhere that the parts actually have different numbers: 2012: 923-0090 2013: 923-0411 as seen here: http://9to5mac.files.wordpress.com/2013/… Anyone know for sure?