Hi jbeam,
Welcome to Sony Community!
Changing the parts on the laptop is not advisable, we can't guarantee that it will work. Usually the wireless card is built in to the motherboard so you might need to replace the entire motherboard. I'm assuming that you are aware that when you upgrade something, others need to be upgraded too to complement with each other.
For more information about your laptop kindly refer to this link.
Regards,
Jen
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