If you slam your car on any shorter than stock springs, the wheels will lean to one side and the car will be unstable, the tyres will wear uneven. The lower you go, the worse it gets. I'm only on 30mm and had to is Frankspeed :laugh: bushes just to avoid buying an adj. panhard rod...
You want 60mm drop... definitely need one. Noddie of here does fantastic on or off-car adj. rods...