[ZBrewha863]

Hey guys, I'm looking at buying an SLP Stage 1 suspension (the SLP Bilsteins and a matched set of Eibach springs), and I was wondering how it stacks up as far as a race-able suspension for a daily driver car. Specifically the springs, I have no idea how they rate against, say, DMS, Hotchkiss, or even the other Eibach springs. Any suggestions? Thanks

[LT4Firehawk]

Actually, the Level I spring specs are:
front springs: Eibach 300-450 lb/in (stock springs: 292 lb/in)
rear springs: Eibach 115-185 lb/in (stock springs: 114 lb/in)

The Level I kit (shocks/springs) that SLP sells aftermarket are the same ones used in the Level II suspension that ran through 99. The specs listed above are from the Bilstein suspension that was available from 00-02 if I remember correctly.

As to how good the setup is, I think it's very good. It's not perfect, but it handles very well and also has a good ride. As a reference point, I was only 4 seconds a lap slower in my LT4 Hawk than in my Z06 at our local track (1:33 to 1:29). Granted this was with 98+ front brakes, but the Hawk still weighs about 400lbs more, gives up a good 40HP to the Z06, and doesn't have as good of gearing. A couple of things that I've done to the Hawk (since running those times) to really improve the SLP suspension are:
Strano 35mm hollow front swaybar
Global West upper front A arms
Unbalanced Engineering adjustable panhard rod
Of those three, the 35mm front bar was the biggest bang for the buck, followed by the GW A arms (great benefit, just expensive). The PHR made some difference in handling, but I mainly did it so I could center the rear for when I run 315s.

My advice, get the SLP springs/shocks and add Sam's 35mm front bar to that.