Well, I installed my winter wheels this weekend & was surprised by the amount of neg camber tire wear due to my Eibach drop (SEDAN).
I put the stock springs back on for the winter, but...
It looks like a front camber kit is a must for next spring.

I have looked at the Kinetics, Stillen, 350evo which have been discussed in other threads.
I also found these fromPerformance Nissan
They look great, cast alum. Camber adjustment is by adding shims at the ball end.

Anyone installed these yet?
Any feedback would be great.

<font color=blue>04 Silverstone G35, 5AT, Prem, Aero
ES100 225/45-18 front 245/40-18 rear
HKS & Y-pipe, Z-tube, Eibach, 35%Tints</font color=blue>

 

I haven't lowered my car yet but after reviewing and doing research on the camber kits from those companies, I would choose the 350evo kit. IMO, that's the best designed kit. Looking at the engineering and machining tells you that it's top notch. If I were to rate them, I would go:

1) 350evo
2) Stillen
3) Performance Nissan
4) Kinetix


04.5 G35C TB/Graphite 6MT, XM Radio, Premo Package, Navi, OEM Chin Spoiler, Hard wired V1

 

After lowering my car, I installed the Performance Nissan upper A arms. The machined aluminum looks great, although they aren't visible after installing them on the car. They perform as advertised with no problems.
I chose them because you can dial in some negative camber when needed (tracking), and return them back to stock camber easily.
If you do get them, the small shims adjust .3 degrees and the medium shims adust .6 degrees.

 

350evo's seem to be the most well designed and crafted; but you should expect this when you have to pay $900.00 for front A-arms.

I have kinetix and they do the camber adjusting just fine, however I am getting a lot of noise from the ball-joints. Luckily kinetix customer service has been superb so far and I hope to get everything fixed soon.