I am definately going with the Bilstien HD's, just I was wondering what my options were for after market springs? I already have very little ground clearnace with my LT's and cutout. Besides lowering, is there any other options?

 

SLP eibachs,
get the good spring rate of hte prokit, but only lowers a bit.

 

Bilstein HDs are designed specifically for stock springs. If you want a little lower, go with the SLP Level 1 kit (springs and revalved Bilsteins). It will give you about .5-.75" drop, and will ride and handle much better than stock.

 

I'm in Blackbird's boat. I can't afford to lose any more ground clearance (I only have 2.5" now), but want new springs and some Bilsteins. Any other options?

 

Your other options are:
1LE springs (may actually raise the car slightly versus stock)
Coilovers (you will be able to run at stock height or lower a little if you want).

With the 1LEs you should be ok running standard Bilstein HDs since the rates aren't that much higher:
stock:
front: 291 lb/in
rear: 114 lb/in
1LE:
front: 360 lb/in
rear: 130-180 lb/in

With coilovers you can choose the spring rate, but if you go too much higher than stock you'll need to either get custom valved Bilsteins or Koni SAs.

Now that I've given the options, why are you guys so set on upgrading the stock springs? If you can't afford to loose any ground clearance why not stay with the stock springs and run the Bilstein HDS. The shocks are what make the biggest difference in ride and handling, not the springs.

 

I was wanting to do both.

 

What do you really want to do with the car? Stock springs and Bilstein HDs will perform very well for just about any application (drag, street, atuxo, or roadcourse). The only real reasons for going with different springs are:
1) to lower the car, which you said you don't want with the LTs
2) increase spring rate for serious autox or roadcourse use (and again stock springs and Bilstein HDs will actuall work good for those for most folks).

 

I was thinking of doing the 1le/bilstein HDs, but where can i get the 1le springs, or at least find a part #?

 

Try a search of this site, I'm sure it's been posted before.

 

I did, and found it. thanks

 

Will the 1LE springs work on a 4th gen? Where can I get them?