New member here, great forum! Found a great many helpful things and members here. Firefighter from the New York City area with a 2001 Grand Prix GT. Minor mods include SLP Headers, Cat, and Exhaust / Upgraded PCM / GMPP Front & Rear Sway Bars / Front & Rear Tower Braces / KYB AGX Shocks / SD Hood / Hella Optilux Driving Lights / Spyder Auto Headlights / Denon DCT-R1 Head Unit. Looking to do more mods, really trying to find some stiffer springs that do not lower the car more than 1/2"? Any suggestions would be appreciated.