2003 Honda Accord Ex Climate Control/Nav System

I bought a 2003 Honda Accord Ex, and the EX comes with the regular Heat/AC system, but the EX-L has the Dual-zone automatic climate control, and the upgraded EX-L comes with Satellite-Linked Navigation
System.
Would it be possible to remove the old indash system, and replace it with the EX-L model, so I can have climate control, or both, the Navigation System? They are the same size and everything.
Thanks
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