my 2003 Astra GSi MK4 Turbo, to take into account that the GSi is lowered already?
Eibach Sportline Spring Kit - Astra G
Eibach Sportline sport spring kit for the Astra G (Mk4) Saloon/Hatch.
These springs lower the vehicle by approximately 45-50mm front and 30mm rear, depending on fittings and equipment.
Suitable for axle weights up to 965kg front and up to 895kg rear. Axle weights are shown on the plate on the driver's door pillar