Lowering
 

I was planning on lowering my car with the Eibach springs, I think it was the Sportlines. Anyway they only drop the car an inch or so. I was wondering if anyone knew whether I could just put the springs on and that would be the end of it, or if I would have to buy new shocks, control arms etc.

You can just put the springs on but it is a good idea to replace the shocks while you are at it. Most of the time they are in need of replacement anyways. You should also get the LCA relocation brackets and possibly a adjustable Pan-hard rod. The rod is not required unless the springs throw your car off center. I believe the sportlines lower the car more than 1" too.

"You don't want to do this job twice if you don't have to"
 

First of all, the Sportlines are a full 2" drop. You want the Eibach Pro-kit, and yes.....if you're going to lower your car, you really really should get new shocks/struts or take the chance of bottoming out all the time. Getting Lower Control Arms and Relocation brackets, and a Adjustable Panhard Bar is "Strongly" recommended as well. When you lower your car, you completely throw off the geometry of the suspension, that's why they strongly recommend relocation brackets even if you don't get LCA's. Without getting that angle back required of the LCA's, you risk having a bad case of wheel hop and generally poor handling.

Some people have said they lower their car with only springs, and deeply regret not doing the other things at the same time. This is because they had to either do the job twice, or pay to have it done a second time after realizing it didn't perform or work well afterwards. It definitely pays to wait until you can afford to do it all at once!:) If you never speed or go around corners fast, and plan on leaving the motor stock with no power gains.......you should be fine. If you drive like a large percentage of Camaro owners.....only doing the springs won't cut it. Just my .02 cents worth.

Honestly there isn't a whole lot of difference between the Pro and the Sport. I had the pro in my old car and my new has the sport. I put the old Pro in my friends Z and If we park next to each other you can't tell which car has the pro or sportline.

I didn't seem to notice any more bottoming out with the sportlines either, but I would stay with the pro if I were looking to lower though...I might have a bum set that didn't turn out the way they should have...

I plan on lowering my '92 RS this summer .Changing the shocks ,to me is a must.I think the right cars lowered are awesome ...

I only want to go an inch lower because the roads around here are horrible. What exactly does the panhard bar do?

The panhard bar keeps your rearend centered under your car. When you start changing suspension parts and lowering your car, it can move your rearend to one side. In my particular situation, after lowering the car, the rearend sat over about 3/8 of an inch closer to the passenger side. Fortunately I went with an Adjustable Panhard Bar, so it was easy to pull it back over to the center.

If you're only wanting to go about an inch lower, I wouldn't worry too much about it. If you don't have much fundage, I'd just go with springs and shocks. These other parts can be change very easy at a later time without tearing the car apart.....but if you're going to change the springs......I personally wouldn't do it without also changing the shocks as well. It just makes good sense to do it while it's all apart anyway.