Originally Posted by 2001TEGGSR

Great advice, check the FAQ.

I'm somewhat surprised, if you are still on OEM suspension, that your rear is sagging due to audio equipment. How much weight are we talking? How many miles are on your car?

If you intend to autocross, or do any other type of legal racing, I would recommend the Koni/Ground Control setup. You can pick custom spring rates, and Koni shocks are superb.

The Tein H or S tech springs have very conservative rates and a minimal drop. When paired with KYB GR-2, or even AGX shocks, an OEM feel is attainable.

If you don't want to lower your car at all, stick with OEM springs.