1. Answered Here
2. Alpine...my brand of choice.
3. Factory wiring is fine for the power you want to run.
4. They will not compare to subwoofers. They will give you more mid-bass, but not sub bass.
5. Use a four channel amp for the four corners, but for bass, save your pennies and run a dedicated subwoofer/amp system. Something like this maybe. Won't take up all that room your current setup does.
6. Amps can go under the seats or in the rear side panels where the rear speakers are. Check out this post.
2. Alpine...my brand of choice.
3. Factory wiring is fine for the power you want to run.
4. They will not compare to subwoofers. They will give you more mid-bass, but not sub bass.
5. Use a four channel amp for the four corners, but for bass, save your pennies and run a dedicated subwoofer/amp system. Something like this maybe. Won't take up all that room your current setup does.
6. Amps can go under the seats or in the rear side panels where the rear speakers are. Check out this post.
