ive done allot of searching myself and from what i gathered, at the bottom of my members ride thred is what you should need to complete your lowering list.( plus a front camber kit which is not on my list) hope it helps

 

Oh sweet, thanks dude

 

The following is just info specific to coilovers, most should translate to the shocks and springs setups.

Front camber kit was unnecessary for the coilovers, as they come with camber plates. I'm not sure if you would need them, but just spend the extra and get a front kit.

On the GS, you do have a FSB, and I'm pretty sure you also have a RSB. Search it, or just simply take a peek under your car... Either way, you won't need the rear endlinks, as they are not attached to the strut. The fronts, however, are. You will need front endlinks. THe best choice would be Moog endlinks, affectionately known as the Problem Solver. They redesigned the endlinks to be beefier, and also the threads have a hex on the joint side of things, to hold using a wrench. This makes install and removal much easier. They are also greaseable.

One thing you should keep in mind though: you drive a 4 cylinder. The lesser weight of the engine makes the front sit a little higher than expected. (Shocks and springs for our cars were designed for the V6).

If you really want to get everything right the first time, go with coilovers. They have fully adjustable ride height, and bring great handling. Some people who get the KYB AGX/Spring set up are disappointed with the amount of roll.

 

Eibach Sportlines Springs (2" drop) - Yes of course
KYB AGX's - Yes definitely recommended
SM5388 KYB Front Strut Mounts (2) - Not a bad idea, there are bearings in them that can wear, but do not "need" unless you know you have a problem here
SM5091 KYB Rear Strut Mounts - Like the above, not a bad idea, they can wear, but do not "need" unless you know you have a problem here
SM5433 KYB Strut Mount Spring Seats - The stock ones tend to get chewed up, in my experience I'd consider these since they should be cheap but again do not "need"
SB103 KYB Strut Boots (4) - Shouldn't need unless yours are missing or chewed up, just reuse what you have
Front and Rear Camber Kit - Front should have enough built-in adjustment to be OK, rear you will have to do something. If an adjustable kit is cheap that can be tweaked by an alignment shop, it's nice to have. Otherwise look for the "DIY rear camber kit" by searching around here, just keep in mind that the money saved in parts might be offset by more time / money spent in labor costs.
endlinks - generally it's the front ones that are recommended to replace, it's because they are kind of flimsy and like to tear apart, especially as they get older, when you are doing the other suspension work. Rears, if you have them, should be fine to leave alone.
And is there anything else that I should replace while I'm there? - Springs & struts are the bare minimums, rear camber kit and front endlinks are highly recommended, everything after that - the wear items mentioned above are nice to have if you have the funds and want to be sure it's all done correctly, but aren't strictly necessary.

 

Awesome, thanks guys. This really helped. I don't quite know if I'm going to be going with the Struts/Springs or coilovers. I was told to go with springs and struts because I use this as my daily driver, and I don't do very much autocrossing. I mostly want the better look, and since my stock struts are all leaking and squeaking I might as well go with some quality stuff while I'm already down there.

I've been told and read that the sportlines will lower my car about as much as the prokit will on the GT. Would it make any difference if I have the auto tranny which weighs more?

Would Tein S-techs give me the same ride quality as the sportlines? I've been told that they aren't as high of quality, and that they'll sag sometimes?