Bc br coils to low in the back
 

Is there a place I can buy a longer spring perch , I have the rears maxed out as high as they can go, I just need like a half inch longer spring perch/ collar. Does this exist ?

I think you need longer springs not a thicker collar.

Try calling 1.800.741.1972 or emailing them
BC Racing - North America - tech@bcracing-na.com
Is it lower than this? This is the ER series about as high as I would want to go.
http://www.allriskga.com/dell/sunz2.jpg

Yes longer springs would also work , I'll give em a call thanks guys an yes mine is much lower than that

In 2009 i believe it was BC introduced the shorter spring for the 350Z and incorporated them in the 370z as well.
Try taking the junk out of the trunk (spare tire, tools etc) see if that helps the height for the time being.

You will need the longer springs if you are too low.

What does it measure from the ground to the bottom of the fender?