The Koni yellows I had on my Supra allowed you to lower the spring perch roughly 20mm in the front and 15mm in the rear. Do the yellow's for the Z allow the same adjustments? I have'nt seen it advertised nor did I come up with anything in a search..

 

No, there pretty much a replacmnet for the stock struts.

I highly recommend them, have them on my car and at soft they are great for daily driving and when you stiffen them up it's a big differance for the track.

 

The Koni's sports (S/A) can be used up to 25mm lower like for T2 springs which are .8 to 1" lower.

 

Anybody know if Koni is going to make matching springs for the 350Z?

http://www.koni-na.com/products.cfm#kits

 

Although it's not documented, the fronts do allow you to change the spring perch height, but I can't remember how much or which direction - I'll have to take a look tonight. The rears have no affect on height as the springs aren't on the shocks.