60mm 60s springs will lower a sporting or GT 40(ish) mm. as GT's and Sportings are already lowered 20mm as standard over the 60s. sure i will be corrected if im wrong..
so gt or sporting springs will lower as much as they say.. i.e.. 60 lowers 60..
but 60s springs etc, will lower 20 less, ie.. 60mm will only lower 40mm
hope im right. had to think about it lol