Following up on this.
I took my car to a reputable local audio place near my home. After sitting in my car with me for about 20 minutes or so to listen to the current sound, and to listen to the genres of music i listen to, desired output volume, etc, the installer recommended a set of focal door speakers, and tweeters (ill provide a link below). He also recommended a custom made sub box that will fit in the cubby spot either on the left or right side where a subwoofer is housed in the cars with premium sound. He would add a JL subwoofer to the box. Total cost would be close to $2000 (including install). The installer said that the most expensive part of the install will be the sub box since it will be custom made. The installer attempted to find an enclosure that would fit in that cubby space, but couldnt so he said that he would need to build it.
Currently, the NVX box is sold out, and from what ive been told, the JL sub will be much better. My question to you all is, would I be ok with just the new door speakers? The installer said that adding the sub would make a huge difference, but it was completely up to me. What say you all?
Flax Evo Series 6-1/2" shallow-mount component speaker system
www.crutchfield.com