Here's the part: http://www.ebay.com/itm/Replacement-US-Standard-keyboard-QWERT-for-MacBook-Air-11-A1465-2012-2013-2014-/162406498999?hash=item25d02e82b7:g:xJcAAOSw4GVYGKlU
Here's a video on doing it: https://www.youtube.com/watch?v=knI4Bgd75HA
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Here's how to pull the rivets: https://www.youtube.com/watch?v=djnOVxzbqJw
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I replace the rivets with screws in a kit like this:
Here's the part: http://www.ebay.com/itm/Replacement-US-Standard-keyboard-QWERT-for-MacBook-Air-11-A1465-2012-2013-2014-/162406498999?hash=item25d02e82b7:g:xJcAAOSw4GVYGKlU
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Here's a video on doing it: https://www.youtube.com/watch?v=knI4Bgd75HA
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Here's how to pull the rivets: https://www.youtube.com/watch?v=djnOVxzbqJw
Here's the part: http://www.ebay.com/itm/Replacement-US-Standard-keyboard-QWERT-for-MacBook-Air-11-A1465-2012-2013-2014-/162406498999?hash=item25d02e82b7:g:xJcAAOSw4GVYGKlU
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Here's a video on doing it: https://www.youtube.com/watch?v=knI4Bgd75HA
Here's the part: http://www.ebay.com/itm/Replacement-US-Standard-keyboard-QWERT-for-MacBook-Air-11-A1465-2012-2013-2014-/162406498999?hash=item25d02e82b7:g:xJcAAOSw4GVYGKlU