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