You will want to upgrade them, especially if you are adding more power to them.
When I was looking for advise here, I was suggested Focal speakers. I couldn't be happier. I have a Pioneer Avic-940BT and a kicker sub with two amps. Sounds great.
So id suggest looking at 2 sets of Focals.
2011 V6 Convertible Kona Blue I Billet Grille
Ford Racing exhaust I Ford Racing M5300N Springs
Airaid CAI I Bama 91 Hybrid Tune
Koni STR.T Shocks
American Racing Bullit Chrome 18" Wheels
255/45/18 Pilot Sport A/S Plus