Not clear why you'd want to do that.
If you've attached a pump big enough to need 2" piping -- there's a high likelihood that you've created a 'can suck your guts out' sort of hazard. I mean this literally, as in "there are intestines in the pump basket"!!
The Intex is not designed, nor does it need, the sort of flow rates 2" piping will support.
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