[s2kdrew]

OE speakers are shit, once you take it out and compare to aftermarket you will see the different. Dash speakers are 1" tweeter and 4" mid with mounting depth just little under 1 1/2". But all aftermarket 4" are two ways speaker instead of just mid. And you will need to find a speaker as shallow as possible. Also will need to grind the dash to make a bigger opening and different hardware for aftermarket speaker. If you plan to have high end speaker then will probably won't fit and the grill won't close. At first I thought would be easy job and I got Clarion base series speaker with mounting depth at 1 11/16", after I grind the opening bigger to fit the speaker. The magnet of the speaker is sitting on the vent tube and raised the speaker. I manage to make it fit but the tweeter of the speaker is touching the grill once I close te grill. Luckily the grill still close tight.

Rear are 3.5" with lots of opening, you can fit any 3.5" speaker on the stock bracket with no problem. But since it is just a fill speaker so high end speaker is not going to make a huge different.

For the door I will have to open it and mesure it myself. Since it is pushing bass with stock amp. And mounting depth is also a problem. But I don't have the time.

You can always raise the driver seat up to put the sub in. But I don't like the idea of the sub under my ass. Seating position is also need to be consider. Go with traditional way, put a sub in the trunk.