I bought them from a MY 07 Z350. Had them installed yesterday. The ride is somewhat stiffer but nothing too bad. I only notice it when going over large bump. Highway ride is just a touch jittery but very tolerable. Could be a problem for a long trip but for going to work and back shouldn't be a problem.

The performance is somewhat better. The initial body lean is mostly absent from from stock sport suspension. A quick change in direction does not result in upsetting the suspension as it used to. Overall, it's still a bit "soft". Maybe a set of Tein basic will do it. There is long sweeping off-ramp where I was able to do around 42mph. With this new set of springs/shocks, I was able to do around 45mph.

Also, I've got to give a big thumps up for the guys at Project Import in Orange county (http://www.projectimport.com). They seem pretty friendly. There is a nice lounge area and there are some nice Best Motoring DVD for viewing while waiting. The price is very reasonable. It only costs me 120 for the entire installation. Stillen would have charged around 250.

Before pics:


After:

 

i push 45mph-off-ramp sweeper curves at 60+ mph... but that's just me...

you should be able to do more than a 3mph improvement with the setup...

the tokico d-specs i've installed do help though...

 

actually if there is a sweeper like he described, u should NOT notice that much difference even with coilovers. I mean u will be able to take it faster about 5mph but the real test is changing direction. Even though stock G35 has a lot of body roll it can take sweepers like this very fast but if there is another one coming right after that’s when u will be in trouble with a stock setup. Those sweeping turns do not really test the cars handling. Tires will make most of the difference in turns like that. Changing direction is what u should be able to do with aftermarket suspension.

 

Ill check out project import If I pay to get my new shocks installed. Im glad you liked them, ive heard of them because I always see there ads on craigslist.com about slashing price on their for sale stuff.

 

Please try 60mph on my sweeper

I agree. Quick change in direction probably has the most impact from suspension mod. Body lean definitely is much less now.

Good luck with your new shocks.