Bro you need to go to a professional who knows what he is doing, I have been going to sound valley saddar rwp , shery bhai there does an excellent job(also a little more expensive than others), for past 3-4 years he is doing all my cars, currently I have a Kenwood KFC w3010 woofer and an Almani amp(civic X), a very basic setup but it need it just to add a bit of punch to my songs, not to annoy others.