I'm finally giving in and getting a GC system with a 600lbs/900lbs spring rate but I'm not quite sure what height I should tell them. The car is strictly a track drift car. I know that I want it lower but I have heard that going too low (in excess of 3") can mess with the geometry. I will also be replacing the 14" bottlecaps for 16" Borbet A's in the future and need clearance in the wheel wells but I'm definitely not opposed to hacking up quarter panels for over fenders. Thanks for any and all help.