Ok here is my prob. I have new 18inch Z07 wheels and I know the car is going to look like a 4x4. I have Finish line performance long tubes and was wondering which springs I should go with. I like the BMR cuz they are 1inch but will 1 inch even look that good? Could I go a little more?

 

I have FLP headers, and I used to have the Eibach springs, which drop about and inch and a half, maybe a little more. It was too much. I had to avoid speed bumps like the plaque, had trouble getting in and out of some parking lots, etc.
I have the BMR now, and they are just right. They give a better look and stance without the issues. I can go over speed breaks now, albeit slowly, without a scrape to the headers.
If you upgrade your springs, any of them have higher rates than the stock springs, and all of them are progressive (variable)-rate springs. This affects your damping (harder for the shock to damp the springs, due to the higher spring rate).
So, bottom line if you upgrade springs, you need to upgrade the shocks as well, or you will get a bouncy ride.
Get either re-valved Bilsteins from Sam Strano, or Koni adjustables (Koni SAor DA). Talk to Sam, he will set you up with a combo thats right for your needs.

 

My car has the prokit with FLP and duals and don't have any problems with my headers scraping at all. The only thing i have issues with is my exhaust.

 

I run Jamex with FLPs and haven't had a problem scraping at all.
On my old LT1 Firebird I had FLPs with a 2" drop and they would scrape everywhere.

 

I have FLPs and Bilstein/Eibach Ground Control kit.

My scraping was my Tunnle brace mounted torque arm, and the messed up v-band flange clamp on the passenger Y-pipe connection.

A ground control kit is the way to go, because I was scraping like crazy, and just pulled the tires, popped out the spanner wrench and raised the car up 1/4th inch so now I don't hang up on speed bumps if I go slow.

 

Yeah, coil-overs would be the ultimate, you can adjust the height the way you want it.