No, it won't. The sound of a humbucking pickup comes primarily from the increased length of string which is sensed by the pickup. The added length lowers the frequency at which the pickup starts to have phase cancelations. This effects not only the frequency range (though that is there, of course) but also the envelope of the sound (the ADSR, if you are a synth person), and those effects on teh envelope are increased by the added pull from the magnets. If you want the sound of a humbucker, you are going to need a guitar with humbuckers.
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