It depends on what 2013 MBP you are talking about, if it’s the A1502 just forget about it, it’s pretty different.
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It depends on what 2013 MBP you are talking about, if it’s the A1502 replacing the A1425, just forget about it, it’s pretty different. If instead you’re thinking about fitting a retina screen on a A1278 it’s even worse, completely different standards.