Stock speaker locations are as follows.
Door panel: Easy to find those. 6 3/4"
Back seat pannel 6 3/4"
And in the trunk 4"
If you want more bass I suggest swapping all the speakers out all at once. The factory jobs are made of paper and foam, and are rather unreliable when you crank them up.
If you want some awesome full sound for not a SHITTON of money Pioneers Premier class speakers are awesome, With a Kevlar cone and a Rubber surround they will perform very well. I was super satisfied with them alone in my CRX.
Pioneer TS-D170R Car Speakers
Grab those for your front.
Pioneer Premier TS-M7PRS Car Speakers
Those for the back seat (You don't want or need tweaters back there really)
Pioneer TS-G1041R Car Speakers
And these way in the back.
4" speakers can't produce bass really, they're physically too small. I'm not sure about the stock freq cutoff for those far back speakers, but you might wanna invest in a set of bass blockers. Nothing worse than buting brand new speakers, cranking up the bass and having them blow in the first month of owning them.
Before you start buying anything though, check the connections first. You said you have the 200 watt setup, which isn't the Monsoon 500 I had stock.
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23:23] blkIROC355: sometimes when i pee i make that sound the light sabers make
[23:23] SpecialK LS1: lmao
[23:23] blkIROC355: and play with the stream
[23:23] SpecialK LS1: that's just wrong