I would recommend going the component route, especially since you are adding an amp. I just installed a set of Morel Maximo 5.25" components using metra adapter plates and they sound very good especially for the price. Im running them off the stock head unit but plan to amp them eventually Amazon.com: Morel Maximo 5.25-Inch Component Speaker System: Car Electronics
2012 Kona Blue V6 6M Base | Performance Package | Boss 302 Steering Wheel | MGW Shifter | Morel Components
1985.5 Black SVO | Stinger FMIC | Forced4 CAI | More Boost!