I hated my Sportlines, the car was way too low. I went through CV axles about once a year, scrapped on everything, and my tires would rub in the rears on turns and on the inside of the front wheel well on big bumps. I don't know the spring rates, but if you called Eibach directly I bet you could get that information.
There were a lot of downfalls to running the Sportlines and I actually lifted my car and went to Prokit springs I was so tired of being low, but hey, the car looked great.

I was looking at some old threads and noticed that you asked about the valve cover it did. Its not powder coated, I painted it with the VHT wrinkle paint. What kind of side marker lights do you have they look good.

I bought mine from the DSM Shootout 2010 Winner Brad Gary for $100 because he needed it gone to install an 8pt cage. Mine is the Race $503 one.

http://www.livermoreperformance.com/autopower_roll_bars.html

It is a 4 point bolt in cage made by AutoPower. And yes it does stiffen up the body roll of the car. You will feel a difference going around turns.

i like my emusa's but the ride isnt that great plus i want something with an adjustable dampening rate. but if you just want a drop they are good

Yup, softer than stock but can handle more than stock, lol. Actually, it FEELS softer than stock. Honestly, for almost all NA applications (if not all), it will work just fine.

It actually feels softer than stock. You won't have any chatter etc problems. I have it in one of my cars (my kid owns it) that has probably about 18k on it now (including about 25 1/4 mile launches) with no problems.

Yup, that clutch is fine. It comes complete but the only thing you might want to buy is a throw out bearing. If you get one, don't take a chance on a cheapie. Go to oem for that.

MB

Eibach Pro Kits.

Thanks for the comment. Yeah, the wing is a hit-or-miss for some, but I like it. Thanks again.

I just figured porting only the opening diddnt really help with air restriction.. but then again i guess its just to get the tb to match up, not for the power gain.

ok, well i can port the part where the tb lines up to, thats np. I just cant port it all the way through to the head.

How do you port it all the way through with a dremal?... Also how do i measure to ensure i diddnt go out and eff it up?

ok man thanks. I knew about the tb i just thought a shop might have done your port work. I dont have the tools or abilitys to pnp mine so id have to take it to a shop :[

I was wondering if you remembered how much you paid for the intake and tb work.. just in a general area..

thanks 4 the comment i like ppl opinion to make my first car worth it