I have an 06 G35 coupe 6mt and wanted to lower my car only
a little bit. Well Installed the fronts and they turned out wonderful.
Dropping more than .5 inch and you can tell there was a difference.
But the back of my car seems to have risen slightly. Anyone else
experience this. AND Im having problems with the front left spring.

There seems to be this clicking noise when I run over uneven pavement.
Can someone help me out please with what might be wrong?

The revised OEM 350z rear springs have a higher spring rate... 427 compared to the 342 of the unrevised IIRC from G35sedan's excellent findings.

Did you compare the spring heights of the two before you installed? Since you have a 6mt, you have the STS with the stiffer 427 springs already, so the 350z revised springs have the same springrate. I would check and see how much difference there is between the springheights, I suspect they are almost exactly the same hence the lack of drop in the rear. If you are only looking for .5" drop in the rear, I suggest you trim the rear rubber springmounts .5" which will net you the drop you are after

Ah good catch. I didn't notice that he already has the sport suspension.

THanks redlude97

But anyone know about the clicking noise from the front left?