Trying to Port Marshmellow from the sprint/Boost 626s Rom to MetroPCS

Hello, Guy's I am trying to Port the new Marshmallow (2.27.651.6) from the sprint/Boost 626s Rom to MetroPCS but I need to know which files are for the MetroPCS Carrier to port it over so I can replace them into the Sprint ROM if anyone can help me out it would be amazing it's really just for a project I don't care if the update comes out before I finish but with your guys help I could get it done before the official update

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