a buddy of mine has a set of eibach lowering springs on his 04 G currently and is looking to sell them to me. i have an 08. he says the are the "red ones"

are these the sportline springs hes talking about?
are they compatible with my z?
ive read that the drop is ~1.2in on these, is this right? because hes tucking a little in the front and back

will these screw with my factory struts bring only about an inch drop? any effect on performance?

im looking around online but see too much conflicting info on these..

thanks

 

If they are g35 specific, then it will barely lower your z at all.