Easy question, and I know the Civic is very common. The factory radio is not amplified at all, is it?
Dash looks like this:

I just want to replace the rear deck speakers. I know they're 6x9 already, just wondering if I should look for a low or high power set. I'm assuming if unamplified, the stereo will put out maybe 15 watts a channel?
Next question, anyone have any experience swapping these? I fear the tweeter post mount being too tall to have the deck panel go back on.
tl;dr version: what are some nice drop in 6x9's for an '05 Civic EX Coupe?
Thanks.