Holy crap 1200 bucks for new springs and struts. You can buy those seperate and save yourself over 300 bucks.

If thats your plan, do AGX's with SSC springs with new mounts. A rough guess at price is 800-900 bucks if you buy the stuff and put it together yourself.

I also bet you could hit up a parts store get the full F-body upgrade for cheaper than 450 bucks.