I did some research for you and pretty much came up with what I
hooked up in my friends civic, and honestly for the price, i've
never heard a better sounding system.

SBR-S122V
Subwoofer With Vented Box
1500 W Peak
500W RMS
$380.00

Box is made for and comes with the Type-R 12" Subwoofer (4Ω + 4Ω). This set
up sounds very clean with plenty of hit when hooked up right.

MRP-M650
Mono Power Amplifier
Per channel into 4 ohms: 400W x 1 (0.08% THD)
$300.00
The sub sounds great with this amp hooked to it.

MRP-F250
4/3/2 Channel Power Amplifier
Per channel into 4 ohms: 40W x 4 (0.08% THD)
Per channel into 2 ohms: 75W x 4
$200.00
this gave his front and rear speakers exactly what they need to stand out.

SPS-69C2
6x9" Coaxial 2-Way Speaker
Power Handling Capacity (RMS): 50W
Power Handling Capacity (Peak): 250W
$120.00
Great speakers for the price.

SPS-17C2
6-1/2" Coaxial 2-Way Speaker
Power Handling Capacity (RMS): 50W
Power Handling Capacity (Peak): 250W
$120.00
Same as the other ones, great for the price.

All together, the whole set up would proboly cost you around $1200.
As i said i've never heard a system sound as good for the price. Hope
this helps out.